A222629 Number of nX2 0..1 arrays with no more than floor(nX2/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..1 order

1, 1, 3, 10, 22, 49, 121, 316, 779, 1921, 4813, 12224, 30853, 77944, 197609, 502916, 1280453, 3263803, 8331482, 21300797, 54509660, 139622191, 357960169, 918555828, 2358870680, 6061898813, 15588393421, 40111331758, 103272011299, 266030741706

Offset

1,3

Comments

Column 2 of A222635

Links

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

Example

All solutions for n=3
..0..0....0..1....0..0
..0..0....1..1....0..0
..0..1....1..1....0..0

Crossrefs

Sequence in context: A023554 A294414 A299336 * A070880 A321335 A171686

Adjacent sequences: A222626 A222627 A222628 * A222630 A222631 A222632

Keyword

nonn

Author

R. H. Hardin Feb 26 2013

Status

approved