A254257 Number of (n+2)X(5+2) 0..1 arrays with every 3X3 subblock sum of the two maximums of the diagonal and antidiagonal minus the sum of the minimums of the central row and column nondecreasing horizontally, vertically and ne-to-sw antidiagonally

236024, 1989857, 7815717, 12249828, 35691048, 87535036, 214982444, 718305580, 1845854060, 5194299052, 15774546604, 45040826028, 127066258092, 383895902892, 1091022854828, 3232273160876, 9539869039276, 28661344066220, 82374798564012

Offset

1,1

Comments

Column 5 of A254260

Links

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

Formula

Empirical: a(n) = 3*a(n-1) +2*a(n-2) +12*a(n-3) -32*a(n-4) -16*a(n-5) +96*a(n-6) -1600*a(n-7) +512*a(n-8) +29696*a(n-10) -20480*a(n-11) -8192*a(n-12) -131072*a(n-13) +131072*a(n-14) for n>21

Example

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

Crossrefs

Sequence in context: A100780 A104286 A254264 * A254303 A269280 A092009

Adjacent sequences: A254254 A254255 A254256 * A254258 A254259 A254260

Keyword

nonn

Author

R. H. Hardin, Jan 27 2015

Status

approved