A258606 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 less than the central column sum

76729, 567009, 2729104, 16806958, 90782784, 474650022, 2276816656, 10535922971, 45716854225, 193196028123, 780713616400, 3089065462326, 11835781060489, 44551750251450, 163755454109809, 593051074898232, 2109303841956964

Offset

1,1

Comments

Column 2 of A258612

Links

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

Example

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

Crossrefs

Cf. A258612

Sequence in context: A104327 A357608 A046720 * A152498 A237747 A237746

Adjacent sequences: A258603 A258604 A258605 * A258607 A258608 A258609

Keyword

nonn

Author

R. H. Hardin, Jun 05 2015

Status

approved