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 A304466 Number of nXn 0..1 arrays with every element unequal to 0, 1, 2, 3 or 6 king-move adjacent elements, with upper left element zero. 0
 1, 8, 41, 322, 5063, 89071, 1802240, 101407827, 8813328376, 823379005870 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Diagonal of A304472. LINKS EXAMPLE Some solutions for n=5 ..0..0..0..0..0. .0..1..1..1..1. .0..0..1..1..0. .0..1..1..1..1 ..0..0..0..0..0. .0..1..1..1..1. .0..1..1..0..0. .0..0..1..1..1 ..0..0..0..1..0. .0..1..1..1..1. .1..1..1..1..1. .1..1..1..1..1 ..0..0..0..1..1. .0..1..1..1..1. .1..1..0..1..1. .1..1..1..0..0 ..1..0..0..0..0. .0..1..1..1..0. .0..1..0..0..1. .1..1..1..1..0 CROSSREFS Cf. A304472. Sequence in context: A188209 A026953 A280068 * A228480 A067301 A295936 Adjacent sequences:  A304463 A304464 A304465 * A304467 A304468 A304469 KEYWORD nonn AUTHOR R. H. Hardin, May 13 2018 STATUS approved

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Last modified October 16 21:10 EDT 2019. Contains 328103 sequences. (Running on oeis4.)