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 A212270 Number of ways to place k non-attacking wazirs on an n x n cylindrical chessboard, summed over all k >= 0. 5
 2, 7, 43, 933, 36211, 3557711, 746156517, 363549830913, 394677987525997, 974602314570939359, 5418730454986467701985, 68176187476467835406646029, 1936241516342334422813929891295, 124281423643836238320564876791634465, 18018270577720149773239661332878801006033 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Wazir is a leaper [0,1]. LINKS Vaclav Kotesovec, Table of n, a(n) for n = 1..32 V. Kotesovec, Non-attacking chess pieces, 6ed, 2013, p.414 FORMULA Limit n ->infinity (a(n))^(1/n^2) is the hard square entropy constant A085850. CROSSREFS Main diagonal of A286513. Cf. A006506, A027683, A182407, A212269, A212271. Sequence in context: A340335 A011835 A198946 * A270348 A270580 A103084 Adjacent sequences: A212267 A212268 A212269 * A212271 A212272 A212273 KEYWORD nonn,hard AUTHOR Vaclav Kotesovec, May 12 2012 STATUS approved

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Last modified August 8 12:20 EDT 2024. Contains 375021 sequences. (Running on oeis4.)