A234165 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 2 (constant-stress 1 X 1 tilings).

24158, 208412, 1773484, 15427948, 133660366, 1183467658, 10438586426, 94449496104, 849993735464, 7882971512792, 72513701669622, 690714087534706, 6499304028679962, 63623536362231308, 612011883415592408

Offset

1,1

Links

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

Example

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

Crossrefs

Column 4 of A234169.

Sequence in context: A249843 A110405 A234112 * A321063 A309018 A253465

Adjacent sequences: A234162 A234163 A234164 * A234166 A234167 A234168

Keyword

nonn

Author

R. H. Hardin, Dec 20 2013

Status

approved