AGL
Amis et Auditeurs de Génie Logiciel

 
  • From: N. J. A. Sloane [mailto:nja(at)research.att.com]
  • Sent: 16 January 2004 14:25
  • To: Patrick René Guillemin
  • Subject: RE: Re A059963
  •  
  • what i meant was that i don't have room in the OEIS entry
  • for more terms than are there now.
  • but if you put the big table somewhere - on your home page,
  • or somewhere else - i will add a link to it from that entry
  • Amities
  • Neil Sloane

The following sequence should be  updated as following

  • ID Number: A059963
  • URL: http://www.research.att.com/projects/OEIS?Anum=A059963
  • Sequence: 1,0,0,0,0,0,0,1,1,0,2,2,2,2,2,0,1,1,1,1,0,4,7,6,6,6,7,4,4,8,
  • 16,18,18,16,8,4,28,30,47,44,54,44,47,30,28,64,48,65,93,92,
  • 92,93,65,48,64,96,219,209,295,346,350,346,295,209,219,96,
  • 500,806,1165,1359,1631,1639
  • Name: Triangle T(n,k) giving number of ways of placing n nonattacking queens
  • on n X n board with the queen on the first row fixed at column k,
  • 1<=k<=n.
  • Example: When n = 8 there are 16 ways to place if the queen on the first row is at the
  • third column
  • 1; 0,0; 0,0,0; 0,1,1,0; 2,2,2,2,2; ...
  • See also: Cf. A000170.
  • Sequence in context: A064741 A037869 A037868 this_sequence A027360
  • A037806 A038082
  • Adjacent sequences: A059960 A059961 A059962 this_sequence A059964
  • A059965 A059966
  • Keywords: nonn,tabl
  • Offset: 1
  • Author(s): Yong Kong (ykong(AT)curagen.com), Mar 03 2001

And the update I propose is

  • Sequence: 1,0,0,0,0,0,0,1,1,0,2,2,2,2,2,0,1,1,1,1,0,4,7,6,6,6,7,4,4,8,16,18,18,16,8,4,28,30,47,44,54,44,47,30,28,64,48,65,93,92,92,93,65,48,64,96,219,209,295,346,350,346,295,209,219,96,500,806,1165,1359,1631,1639,
  • 1639,
  • 1631,
  • 1359,
  • 1165,
  • 806,
  • 500,
  • 2 760,
  • 3 799,
  • 5 508,
  • 6 023,
  • 7 346,
  • 7 385,
  • 8 070,
  • 7 385,
  • 7 346,
  • 6 023,
  • 5 508,
  • 3 799,
  • 2 760,
  • 11 892,
  • 16 488,
  • 23 024,
  • 27 494,
  • 32 163,
  • 34 760,
  • 36 977,
  • 36 977,
  • 34 760,
  • 32 163,
  • 27 494,
  • 23 024,
  • 16 488,
  • 11 892,
  • 69 516,
  • 98 156,
  • 122 763,
  • 157 034,
  • 175 296,
  • 201 164,
  • 206 294,
  • 218 738,
  • 206 294,
  • 201 164,
  • 175 296,
  • 157 034,
  • 122 763,
  • 98 156,
  • 69 516,
  • 436 228,
  • 569 531,
  • 736 363,
  • 892 999,
  • 1 050 762,
  • 1 160 280,
  • 1 249 262,
  • 1 290 831,
  • 1 290 831,
  • 1 249 262,
  • 1 160 280,
  • 1 050 762,
  • 892 999,
  • 736 363,
  • 569 531,
  • 436 228,
  • 2 729 772,
  • 3 321 745,
  • 4 423 207,
  • 5 172 708,
  • 6 214 709,
  • 6 787 111,
  • 7 546 991,
  • 7 698 195,
  • 8 026 228,
  • 7 698 195,
  • 7 546 991,
  • 6 787 111,
  • 6 214 709,
  • 5 172 708,
  • 4 423 207,
  • 3 321 745,
  • 2 729 772,
  • 17 210 372,
  • 22 038 667,
  • 27 585 497,
  • 33 297 967,
  • 39 005 536,
  • 43 698 287,
  • 47 802 996,
  • 50 523 766,
  • 51 882 224,
  • 51 882 224,
  • 50 523 766,
  • 47 802 996,
  • 43 698 287,
  • 39 005 536,
  • 33 297 967,
  • 27 585 497,
  • 22 038 667,
  • 17 210 372,
  • 121 956 044,
  • 154 458 256,
  • 187 854 702,
  • 230 334 612,
  • 263 322 762,
  • 300 323 104,
  • 328 342 530,
  • 351 816 544,
  • 360 352 268,
  • 370 536 204,
  • 360 352 268,
  • 351 816 544,
  • 328 342 530,
  • 300 323 104,
  • 263 322 762,
  • 230 334 612,
  • 187 854 702,
  • 154 458 256,
  • 121 956 044,
  • 912 695 924,
  • 1 134 501 243,
  • 1 381 017 109,
  • 1 649 528 539,
  • 1 925 960 786,
  • 2 158 815 033,
  • 2 388 912 956,
  • 2 563 311 029,
  • 2 670 502 723,
  • 2 729 349 100,
  • 2 729 349 100,
  • 2 670 502 723,
  • 2 563 311 029,
  • 2 388 912 956,
  • 2 158 815 033,
  • 1 925 960 786,
  • 1 649 528 539,
  • 1 381 017 109,
  • 1 134 501 243,
  • 912 695 924

to be continued for N=21 (16 January 2004)