login
A234477
Number of (n+1) X (2+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 1 (constant-stress 1 X 1 tilings).
1
7840, 141728, 2765648, 56172656, 1165600828, 24484032192, 517788509004, 10996717871928, 234081623047024, 4991134242744276, 106505167261928932, 2274481051607364768, 48584502628043230124, 1038273815225245627876
OFFSET
1,1
FORMULA
Empirical recurrence of order 46 (see link above).
EXAMPLE
Some solutions for n=2:
5 6 1 1 4 4 2 5 2 1 4 1 2 5 6 6 0 3 5 2 5
7 7 3 3 5 4 3 7 3 4 6 2 1 5 5 7 2 4 5 1 3
4 5 2 2 3 1 3 6 1 5 6 3 2 5 6 7 3 4 3 0 1
CROSSREFS
Column 2 of A234481.
Sequence in context: A374576 A374507 A194352 * A286181 A045277 A099498
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 26 2013
STATUS
approved