A229379 Number of nX7 0..2 arrays avoiding 11 horizontally, 22 vertically and 00 diagonally or antidiagonally

1224, 36374, 2486980, 138118032, 8454015792, 492938029980, 29757371834046, 1753378119210848, 105365264675732262, 6236225995970496338, 373776319178643511574, 22179629928239882354518, 1327081034442636655221164

Offset

1,1

Comments

Column 7 of A229380

Links

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

Example

Some solutions for n=3
..0..0..1..0..1..0..0....0..0..0..1..2..0..1....0..0..1..0..1..0..2
..1..2..2..1..2..1..2....1..2..2..2..1..2..1....1..2..1..2..1..0..1
..0..1..0..1..0..2..0....2..0..0..0..0..1..0....2..0..2..0..1..2..1

Crossrefs

Sequence in context: A128655 A251446 A014488 * A229371 A377455 A184038

Adjacent sequences: A229376 A229377 A229378 * A229380 A229381 A229382

Keyword

nonn

Author

R. H. Hardin Sep 21 2013

Status

approved