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 A304340 Number of nXn 0..1 arrays with every element unequal to 0, 1, 2, 4 or 5 king-move adjacent elements, with upper left element zero. 0
 1, 4, 27, 290, 6373, 135445, 4921043, 343449680, 30008468246, 4458350461574 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Diagonal of A304347. LINKS EXAMPLE Some solutions for n=5 ..0..0..1..1..1. .0..0..1..1..0. .0..0..0..1..0. .0..0..1..1..0 ..1..1..1..1..0. .1..1..1..1..0. .0..0..0..0..0. .1..0..0..0..0 ..1..1..1..1..1. .1..1..1..1..1. .0..0..0..0..1. .0..0..0..0..0 ..0..0..1..1..0. .1..1..1..1..1. .0..0..0..0..1. .1..0..0..0..0 ..0..0..1..1..0. .1..1..0..1..1. .1..1..0..0..0. .0..1..0..0..0 CROSSREFS Cf. A304347. Sequence in context: A179494 A295255 A203157 * A119820 A159599 A221411 Adjacent sequences:  A304337 A304338 A304339 * A304341 A304342 A304343 KEYWORD nonn AUTHOR R. H. Hardin, May 11 2018 STATUS approved

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Last modified March 23 09:20 EDT 2019. Contains 321424 sequences. (Running on oeis4.)