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A235610
Array read by antidiagonals: T(n,k) = number of possible positions in standard Connect Four play on a board of height n and width k (n>=1, k>=1).
2
2, 3, 5, 4, 18, 13, 5, 58, 116, 35, 6, 179, 869, 741, 96, 7, 537, 6000, 12031, 4688, 267, 8, 1571, 38310, 161029, 158911, 29737, 750, 9, 4587, 235781, 1706255, 3945711, 2087325, 189648, 2118
OFFSET
1,1
LINKS
EXAMPLE
The array as given on the Tromp web site:
height
------
8: 9 13343 8424616 1104642469
7: 8 4587 1417322 135385909 14171315454
6: 7 1571 235781 15835683 1044334437 69173028785 4531985219092
5: 6 537 38310 1706255 69763700 2818972642 112829665923
4: 5 179 6000 161029 3945711 94910577 2265792710 54233186631
3: 4 58 869 12031 158911 2087325 27441956 362940958
2: 3 18 116 741 4688 29737 189648 1216721
1: 2 5 13 35 96 267 750 2118
-------------------------------------------------------------------------------
-: 1 2 3 4 5 6 7 <- width
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
N. J. A. Sloane, Jan 23 2014
STATUS
approved