A234737 - OEIS

A234737

Number of (n+1) X (7+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 8 (constant-stress 1 X 1 tilings).

426120, 760608, 1283880, 2723040, 5395128, 13083552, 29705640, 79520352, 200901240, 578901408, 1586287080, 4838786400, 14115215928

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OFFSET

1,1

LINKS

Table of n, a(n) for n=1..13.

EXAMPLE

Some solutions for n=1:

2 6 1 7 0 5 3 5 0 5 1 5 2 7 0 5 6 1 7 1 7 0 6 3

6 2 5 3 4 1 7 1 4 1 5 1 6 3 4 1 2 5 3 5 3 4 2 7

CROSSREFS

Column 7 of A234738.

Sequence in context: A233499 A282337 A192228 * A206082 A209794 A234448

Adjacent sequences: A234734 A234735 A234736 * A234738 A234739 A234740

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 30 2013

STATUS

approved