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 A298502 Number of n X n 0..1 arrays with every element equal to 0, 2, 3, 4 or 7 king-move adjacent elements, with upper left element zero. 0
 1, 5, 10, 269, 10969, 1091801, 364785216, 269830709761, 511150044413047 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Diagonal of A298508. LINKS EXAMPLE Some solutions for n=5 ..0..0..0..0..0. .0..0..1..1..1. .0..0..1..1..0. .0..0..0..0..0 ..1..0..1..1..0. .1..0..1..0..1. .0..1..1..1..1. .1..0..0..1..0 ..1..1..1..1..1. .1..1..1..0..0. .1..0..0..0..0. .0..0..0..0..0 ..1..1..1..1..1. .1..1..1..0..0. .1..1..0..0..1. .0..0..0..0..0 ..1..0..1..1..0. .1..0..1..0..1. .1..0..0..0..0. .0..1..0..0..1 CROSSREFS Cf. A298508. Sequence in context: A067958 A248366 A297908 * A201026 A213146 A309558 Adjacent sequences:  A298499 A298500 A298501 * A298503 A298504 A298505 KEYWORD nonn AUTHOR R. H. Hardin, Jan 20 2018 STATUS approved

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Last modified April 17 02:26 EDT 2021. Contains 343059 sequences. (Running on oeis4.)