A284336 - OEIS

A284336

Number of 3 X n 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.

4, 13, 49, 373, 2259, 18114, 120058, 959041, 6725380, 53524100, 389145239, 3078502323, 22909373317, 180462930528, 1364622501692, 10722180215723, 81993405397067, 643447267719348, 4960055945696896, 38910411283028492

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OFFSET

1,1

COMMENTS

Row 3 of A284334.

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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