A302731 - OEIS

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A302731

Number of 6Xn 0..1 arrays with every element equal to 1, 2, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

0, 162, 1079, 941, 4491, 20842, 89121, 286746, 1022779, 4520360, 18491493, 67714259, 259145846, 1045498404, 4177884352, 16077695845, 62395241080, 246809269806, 974367008077, 3802389262429, 14855944546521, 58398777429077

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

Row 6 of A302728.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=5

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

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

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