A257267 Number of (n+2)X(2+2) 0..2 arrays with no 3x3 subblock diagonal sum less than the antidiagonal sum or central row sum equal to the central column sum

119716, 2292196, 29746116, 380991361, 3966480400, 40331082276, 361698799396, 3170981525625, 25610765461264, 202919084831089, 1519992095029776, 11211245053949889, 79474991441000464, 556561574072997025

Offset

1,1

Comments

Column 2 of A257270

Links

R. H. Hardin, Table of n, a(n) for n = 1..175

Example

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

Crossrefs

Cf. A257270

Sequence in context: A263083 A250151 A257381 * A175581 A031664 A234736

Adjacent sequences: A257264 A257265 A257266 * A257268 A257269 A257270

Keyword

nonn

Author

R. H. Hardin, Apr 19 2015

Status

approved