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 A296681 Number of n X n 0..1 arrays with each 1 adjacent to 1, 2 or 3 king-move neighboring 1's. 0
 1, 12, 210, 11478, 2323514, 1231267842, 2094245366560, 11122215538558651, 176228516137528739528, 8634201557142385630070796 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Diagonal of A296688. LINKS Table of n, a(n) for n=1..10. EXAMPLE Some solutions for n=4 ..1..1..0..1. .1..1..1..1. .0..1..1..0. .1..0..1..1. .1..1..0..1 ..0..1..0..1. .0..0..0..1. .0..0..0..0. .1..0..0..1. .1..1..0..1 ..0..1..0..0. .1..0..0..1. .0..0..0..1. .1..0..0..1. .0..0..0..1 ..1..0..1..1. .1..0..0..0. .0..0..1..1. .1..0..1..1. .0..0..0..1 CROSSREFS Cf. A296688. Sequence in context: A334886 A027399 A266910 * A231260 A317199 A281253 Adjacent sequences: A296678 A296679 A296680 * A296682 A296683 A296684 KEYWORD nonn AUTHOR R. H. Hardin, Dec 18 2017 STATUS approved

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Last modified June 21 11:05 EDT 2024. Contains 373544 sequences. (Running on oeis4.)