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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

(list; graph; refs; listen; history; text; internal format)

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