A302366 - OEIS

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A302366

Number of nX7 0..1 arrays with every element equal to 0, 2, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

1, 496, 1109, 21831, 405340, 9361759, 188443738, 4174802035, 91302504318, 1990647394962, 43458424036759, 950882891683727, 20782195034545859, 454232197608277559, 9930143090303194255, 217079454443097601597

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

OFFSET

1,2

COMMENTS

Column 7 of A302367.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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