A257422 Number of (n+2)X(4+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally

41140, 103575, 450756, 1770206, 4442466, 13233402, 36058660, 94181694, 259847932, 722844592, 1965855694, 5405634454, 14813746242, 40504964992, 111029975004, 304364243354, 832977215094, 2280046783862, 6239422982964

Offset

1,1

Comments

Column 4 of A257426

Links

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

Example

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

Crossrefs

Cf. A257426

Sequence in context: A250819 A234546 A344456 * A257429 A254238 A286891

Adjacent sequences: A257419 A257420 A257421 * A257423 A257424 A257425

Keyword

nonn

Author

R. H. Hardin, Apr 22 2015

Status

approved