A302421 - OEIS

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A302421

Number of n X n 0..1 arrays with every element equal to 0, 1, 3 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

1, 3, 11, 42, 372, 4231, 48037, 1171867, 30957683, 1262711362, 67345167687, 6258369400424

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

OFFSET

1,2

COMMENTS

Diagonal of A302427.

LINKS

Table of n, a(n) for n=1..12.

EXAMPLE

Some solutions for n=5

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

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