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A257381 Number of (n+2)X(2+2) 0..2 arrays with no 3x3 subblock diagonal sum equal to the antidiagonal sum or central row sum less than the central column sum 1
119716, 1444804, 20611600, 343435024, 5413133476, 81296835876, 1247979436900, 19524520846336, 302481385728064, 4647415584865936, 71685607209222400, 1109793021380582449, 17154635437233106576, 264743455290883440400 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A257385

LINKS

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

EXAMPLE

Some solutions for n=1

..0..2..2..0....2..0..1..1....1..1..0..2....0..0..0..0....2..0..0..2

..2..1..1..2....0..0..2..2....0..2..1..2....1..2..2..2....0..2..1..1

..1..0..1..0....0..1..0..1....0..0..2..0....2..2..1..1....0..1..1..1

CROSSREFS

Cf. A257385

Sequence in context: A262509 A263083 A250151 * A257267 A175581 A031664

Adjacent sequences:  A257378 A257379 A257380 * A257382 A257383 A257384

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 21 2015

STATUS

approved

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Last modified July 6 15:57 EDT 2022. Contains 355111 sequences. (Running on oeis4.)