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A299243 Number of nXn 0..1 arrays with every element equal to 0, 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero. 0
1, 5, 6, 55, 1095, 35320, 2044405, 321811361, 111378069579, 67948097097737 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A299249.

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=5

..0..0..1..0..0. .0..1..1..1..1. .0..0..1..0..0. .0..0..0..0..0

..0..1..1..0..1. .1..1..0..0..1. .0..1..1..1..0. .1..0..1..1..0

..1..1..1..1..1. .1..0..1..0..1. .1..1..1..1..1. .0..0..1..0..1

..0..1..1..1..0. .1..0..0..1..1. .0..0..1..0..1. .1..0..1..0..1

..0..0..1..0..0. .1..1..1..1..0. .0..1..1..0..0. .0..0..0..1..1

CROSSREFS

Cf. A299249.

Sequence in context: A269908 A157805 A256291 * A191557 A223530 A132444

Adjacent sequences:  A299240 A299241 A299242 * A299244 A299245 A299246

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 05 2018

STATUS

approved

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Last modified July 20 16:34 EDT 2019. Contains 325185 sequences. (Running on oeis4.)