A258886 Number of (n+2)X(n+2) 0..1 arrays with no 3x3 subblock diagonal sum less than the antidiagonal sum or central row sum less than the central column sum

242, 2304, 6072, 7225, 12544, 21025, 32400, 48841, 69696, 97969, 132496, 177241, 230400, 297025, 374544, 469225, 577600, 707281, 853776, 1026169, 1218816, 1442401, 1690000, 1974025, 2286144, 2640625, 3027600, 3463321, 3936256, 4464769

Offset

1,1

Comments

Diagonal of A258894

Links

R. H. Hardin, Table of n, a(n) for n = 1..68

Example

Some solutions for n=4
..1..1..0..0..0..1....1..0..0..0..0..1....1..1..0..0..0..0....1..1..0..1..0..0
..1..1..0..0..0..0....0..1..0..0..0..0....1..0..0..0..0..1....1..1..1..0..1..1
..1..0..0..0..0..1....1..0..0..0..0..1....1..0..0..0..0..0....1..1..0..1..0..1
..1..0..0..0..0..0....0..0..0..0..0..0....1..0..0..0..0..1....1..0..1..0..1..1
..0..0..0..0..0..1....1..0..0..0..0..1....0..0..0..0..1..1....1..0..0..1..1..1
..1..0..0..0..1..0....0..0..0..0..1..1....0..0..0..0..1..1....0..0..0..0..1..1

Crossrefs

Cf. A258894

Sequence in context: A258887 A234484 A160551 * A354563 A354565 A165935

Adjacent sequences: A258883 A258884 A258885 * A258887 A258888 A258889

Keyword

nonn

Author

R. H. Hardin, Jun 14 2015

Status

approved