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A257424 Number of (n+2)X(6+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally 1
514920, 1246585, 5347670, 19771628, 39029574, 115919394, 317271378, 756210536, 2131836574, 5828147664, 15609807360, 43074413716, 116962517460, 315815849814, 863675994118, 2358777950090, 6431658379770, 17567133145546, 47951743101422 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A257426

LINKS

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

EXAMPLE

Some solutions for n=1

..0..0..0..0..1..0..0..0....0..0..0..0..1..1..0..0....0..0..0..1..0..1..0..0

..0..0..0..0..1..0..1..0....0..0..1..1..0..1..0..1....0..0..1..0..0..1..0..1

..1..1..0..0..1..0..1..1....1..0..0..0..0..1..0..1....0..0..1..0..1..0..0..0

CROSSREFS

Cf. A257426

Sequence in context: A233858 A306952 A329461 * A257431 A254240 A087096

Adjacent sequences:  A257421 A257422 A257423 * A257425 A257426 A257427

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 22 2015

STATUS

approved

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Last modified February 27 03:03 EST 2020. Contains 332299 sequences. (Running on oeis4.)