A257204 Number of (n+2)X(3+2) 0..1 arrays with every 3X3 subblock sum of the two sums of the diagonal and antidiagonal minus the two minimums of the central column and central row nondecreasing horizontally and vertically

7579, 20815, 49932, 146246, 263630, 411303, 729311, 1137502, 1610329, 2274915, 3169472, 4338292, 5813318, 7747950, 10182266, 13271860, 17219400, 22080758, 28263063, 36156579, 45961370, 58304592, 74030044, 94195258, 120080310

Offset

1,1

Comments

Column 3 of A257209

Links

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

Example

Some solutions for n=4
..0..1..0..0..0....0..1..1..0..1....0..1..0..0..1....0..1..0..0..1
..0..0..0..0..1....0..1..0..0..0....1..0..0..0..1....0..0..0..0..1
..0..0..0..0..1....0..1..0..1..1....0..0..0..0..0....0..0..0..0..0
..0..0..1..1..1....1..1..1..1..1....0..0..0..1..1....0..0..0..1..1
..1..1..1..0..0....1..0..1..0..1....1..0..0..1..0....1..0..0..1..0
..1..1..1..1..1....1..0..1..1..1....1..1..0..0..0....1..1..1..0..0

Crossrefs

Cf. A257209

Sequence in context: A064872 A254909 A254902 * A204358 A232547 A028539

Adjacent sequences: A257201 A257202 A257203 * A257205 A257206 A257207

Keyword

nonn

Author

R. H. Hardin, Apr 18 2015

Status

approved