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 A286418 Array read by antidiagonals: T(n,m) = number of cycles in K_n X K_m 3
 0, 0, 0, 1, 1, 1, 7, 14, 14, 7, 37, 170, 312, 170, 37, 197, 2904, 13945, 13945, 2904, 197, 1172, 74779, 1241696, 3228524, 1241696, 74779, 1172, 8018, 2751790, 196846257, 1723178763, 1723178763, 196846257, 2751790, 8018 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,7 COMMENTS Equivalently, the number of undirected cycles in the n X m rook graph. LINKS Andrew Howroyd, Table of n, a(n) for n = 1..78 Eric Weisstein's World of Mathematics, Graph Cycle, Rook Graph EXAMPLE Table starts: m\n  1    2       3          4             5 ------------------------------------------------ 1 |  0    0       1          7            37 ... 2 |  0    1      14        170          2904 ... 3 |  1   14     312      13945       1241696 ... 4 |  7  170   13945    3228524    1723178763 ... 5 | 37 2904 1241696 1723178763 6198979538330 ... CROSSREFS Main diagonal is A234624. Row 1 is A002807. Cf. A269562, A269565. Sequence in context: A225556 A064666 A269160 * A040042 A233366 A232831 Adjacent sequences:  A286415 A286416 A286417 * A286419 A286420 A286421 KEYWORD nonn,tabl AUTHOR Andrew Howroyd, May 08 2017 STATUS approved

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Last modified December 8 02:04 EST 2019. Contains 329850 sequences. (Running on oeis4.)