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 A305169 Number of n X n 0..1 arrays with every element unequal to 2, 3, 4, 6 or 7 king-move adjacent elements, with upper left element zero. 0
 0, 3, 4, 410, 26810, 2549718, 1069089450, 830801270567, 1384315836778981 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Diagonal of A305175. LINKS Table of n, a(n) for n=1..9. EXAMPLE Some solutions for n=5 ..0..0..1..0..0. .0..0..1..1..1. .0..0..0..1..0. .0..1..1..1..0 ..1..1..1..1..1. .1..1..1..0..0. .1..1..0..0..1. .1..0..0..1..0 ..1..0..0..1..1. .1..0..1..1..0. .0..0..0..0..0. .1..1..1..1..1 ..0..0..0..0..0. .0..0..1..1..0. .0..0..0..1..0. .1..0..1..0..0 ..1..1..0..1..1. .1..0..0..1..0. .1..1..1..0..1. .1..0..1..0..1 CROSSREFS Cf. A305175. Sequence in context: A304150 A305505 A069970 * A316759 A334471 A153063 Adjacent sequences: A305166 A305167 A305168 * A305170 A305171 A305172 KEYWORD nonn AUTHOR R. H. Hardin, May 26 2018 STATUS approved

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Last modified December 10 11:36 EST 2023. Contains 367710 sequences. (Running on oeis4.)