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

119716, 1444804, 20611600, 343435024, 5413133476, 81296835876, 1247979436900, 19524520846336, 302481385728064, 4647415584865936, 71685607209222400, 1109793021380582449, 17154635437233106576, 264743455290883440400

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