A255028 Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of the two sums of the central row and central column minus the two minimums of the diagonal and antidiagonal nondecreasing horizontally, vertically and ne-to-sw antidiagonally

512, 9492, 100001, 281112, 509796, 553864, 813888, 1108752, 1779292, 2346000, 3394644, 4499144, 6788952, 8806504, 12674932, 16849772, 25169544, 32012004, 46593820, 62645944, 94145548, 118670864, 175324256, 237734616, 359965708

Offset

1,1

Comments

Diagonal of A255036

Links

R. H. Hardin, Table of n, a(n) for n = 1..33

Example

Some solutions for n=3
..0..0..1..1..0....1..1..1..1..0....1..0..1..1..0....1..1..0..1..1
..1..0..0..0..0....0..0..0..0..0....0..0..0..0..1....0..1..0..0..0
..1..0..0..0..0....1..0..0..1..1....0..0..1..0..1....0..0..1..1..0
..1..0..1..1..1....0..1..1..1..1....0..1..0..1..0....1..0..1..1..1
..0..1..0..1..0....0..0..1..1..0....0..0..0..1..0....1..1..1..0..0

Crossrefs

Cf. A255036

Sequence in context: A256896 A254234 A254546 * A247932 A090007 A344305

Adjacent sequences: A255025 A255026 A255027 * A255029 A255030 A255031

Keyword

nonn

Author

R. H. Hardin, Feb 13 2015

Status

approved