A254899 Number of (n+2)X(n+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, vertically and ne-to-sw antidiagonally

512, 5939, 24358, 90730, 61769, 20173, 10974, 9502, 9786, 10684, 11306, 12389, 14071, 15851, 17548, 19615, 21845, 24471, 27314, 30062, 33061, 36462, 39973, 43983, 48170, 52340, 56779, 61849, 67336, 72915, 78565, 84669, 91465, 98853, 106014

Offset

1,1

Comments

Diagonal of A254907

Links

R. H. Hardin, Table of n, a(n) for n = 1..42

Example

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

Crossrefs

Sequence in context: A061209 A017259 A017367 * A258999 A253833 A017487

Adjacent sequences: A254896 A254897 A254898 * A254900 A254901 A254902

Keyword

nonn

Author

R. H. Hardin, Feb 10 2015

Status

approved