A265465 Number of nX7 0..n+7-2 arrays with upper left zero and lower right n+7-2 and each element differing from its horizontal and antidiagonal neighbors by one or two.

79, 46898, 25855219, 18032679492, 14031585901207, 9188739329021395, 6109458550119472926, 4497609382425392134864, 3129522404719291576574593, 2108536407604745793629208440, 1492937943783342517758330275744

Offset

1,1

Comments

Column 7 of A265466.

Links

R. H. Hardin, Table of n, a(n) for n = 1..58

Example

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

Crossrefs

Cf. A265466.

Sequence in context: A363515 A251365 A023343 * A138917 A265589 A116327

Adjacent sequences: A265462 A265463 A265464 * A265466 A265467 A265468

Keyword

nonn

Author

R. H. Hardin, Dec 09 2015

Status

approved