A257421 Number of (n+2)X(3+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally

10684, 27244, 117324, 449022, 1290910, 3917190, 11883298, 33766938, 96478988, 272492320, 759572898, 2120432736, 5906478692, 16369510406, 45291725362, 125081097988, 344778228786, 949378792506, 2611483388044, 7175959675462

Offset

1,1

Comments

Column 3 of A257426

Links

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

R. H. Hardin, Empirical recurrence of order 88

Formula

Empirical recurrence of order 88 (see link above)

Example

Some solutions for n=3
..0..0..0..1..1....0..1..0..0..1....0..0..1..0..1....0..0..1..0..0
..0..0..1..1..1....1..1..0..1..1....0..0..0..0..0....0..0..0..1..1
..1..0..1..0..0....1..0..0..1..1....0..0..1..1..1....1..1..1..1..0
..0..0..1..1..1....0..0..1..1..0....0..1..1..1..1....1..0..1..1..1
..1..0..1..1..0....0..1..1..0..0....0..1..1..0..1....1..0..1..1..1

Crossrefs

Cf. A257426

Sequence in context: A065320 A164565 A212075 * A257428 A254237 A207282

Adjacent sequences: A257418 A257419 A257420 * A257422 A257423 A257424

Keyword

nonn

Author

R. H. Hardin, Apr 22 2015

Status

approved