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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
OFFSET
1,1
LINKS
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
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 01 2014
STATUS
approved