A235255 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 7, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).

39680, 102000, 251656, 717452, 1951752, 5990204, 17480904, 56590772, 174061880, 586251132, 1878570184, 6520782212, 21592361736, 76732245020, 260994094488, 945046085492, 3286749223400, 12084946706892, 42822271489672

Offset

1,1

Comments

Column 5 of A235258.

Links

R. H. Hardin, Table of n, a(n) for n = 1..88

R. H. Hardin, Empirical recurrence of order 58

Formula

Empirical recurrence of order 58 (see link above).

Example

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

Crossrefs

Sequence in context: A162866 A236132 A204311 * A234920 A116220 A103809

Adjacent sequences: A235252 A235253 A235254 * A235256 A235257 A235258

Keyword

nonn

Author

R. H. Hardin, Jan 05 2014

Status

approved