A234447 Number of (n+1) X (4+1) 0..4 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 1 (constant-stress 1 X 1 tilings).

58720, 1377422, 34601928, 898985624, 23647980136, 627437990794, 16674841633492, 444755926154674, 11853880524355808, 316752410636964012, 8452634047709216624, 226106339577862820806, 6038837815573273390480

Offset

1,1

Links

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

Example

Some solutions for n=1:
  0 1 0 0 0      1 3 3 2 3      3 0 2 3 2      2 2 2 0 2
  1 3 3 2 3      0 3 2 2 2      4 0 3 3 3      3 4 3 0 3

Crossrefs

Column 4 of A234450.

Sequence in context: A031657 A251519 A255781 * A227601 A147700 A214118

Adjacent sequences: A234444 A234445 A234446 * A234448 A234449 A234450

Keyword

nonn

Author

R. H. Hardin, Dec 26 2013

Status

approved