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A234919 Number of (n+1) X (6+1) 0..4 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 2, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings). 1
12360, 47980, 186500, 990956, 4834440, 28854040, 150606424, 948274980, 5093099972, 33282246680, 182453908840, 1227449650312, 6855533668528, 47143909716212, 268032385984924, 1871592421095824, 10821681133242880 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

EXAMPLE

Some solutions for n=3:

1 0 1 0 3 0 1 1 4 3 0 1 4 1 0 1 0 3 4 3 0

4 1 0 1 2 1 4 2 3 4 3 2 3 2 1 0 1 2 1 2 1

3 2 3 2 1 2 3 1 0 3 0 1 4 1 2 3 2 1 2 1 2

2 3 2 3 4 3 2 2 3 4 3 2 3 2 1 4 1 2 1 2 1

CROSSREFS

Column 6 of A234921.

Sequence in context: A274247 A045080 A238051 * A183693 A096618 A238308

Adjacent sequences: A234916 A234917 A234918 * A234920 A234921 A234922

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 01 2014

STATUS

approved

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Last modified November 26 16:16 EST 2022. Contains 358362 sequences. (Running on oeis4.)