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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, 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 (list; graph; refs; listen; history; text; internal format)
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

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Last modified January 29 04:57 EST 2020. Contains 331335 sequences. (Running on oeis4.)