A234671 Number of (n+1) X (5+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 4 (constant-stress 1 X 1 tilings).

1778412, 12470688, 87273500, 612823800, 4310166424, 30383174872, 214543149212, 1518177199612, 10760923462440, 76431308293764, 543736436534596, 3875894712574776

Offset

1,1

Links

Table of n, a(n) for n=1..12.

Example

Some solutions for n=1:
  0 6 0 4 3 1    4 2 6 0 4 5    0 2 4 1 5 1    0 2 4 1 1 6
  0 2 0 0 3 5    2 4 4 2 2 7    2 0 6 7 7 7    2 0 6 7 3 4

Crossrefs

Column 5 of A234672.

Sequence in context: A017286 A017394 A017658 * A043650 A234082 A140861

Adjacent sequences: A234668 A234669 A234670 * A234672 A234673 A234674

Keyword

nonn

Author

R. H. Hardin, Dec 29 2013

Status

approved