A234449 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 1 (constant-stress 1 X 1 tilings).

3137920, 170001402, 10079824144, 627437990794, 39720806964788, 2548197407150290, 163772796220260584, 10589006000192373618, 683462930964952700304, 44310666343515542796718, 2864896872318574609384464

Offset

1,1

Links

R. H. Hardin, Table of n, a(n) for n = 1..20

Example

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

Crossrefs

Column 6 of A234450.

Sequence in context: A172606 A234151 A067899 * A204629 A235070 A203877

Adjacent sequences: A234446 A234447 A234448 * A234450 A234451 A234452

Keyword

nonn

Author

R. H. Hardin, Dec 26 2013

Status

approved