A254507 Number of (n+2)X(3+2) 0..1 arrays with every 3X3 subblock sum of four medians of central row, central column, diagonal and antidiagonal nondecreasing horizontally, vertically and ne-to-sw antidiagonally

12730, 55667, 373348, 2290520, 13015622, 74724261, 412719610, 2257549280, 12214911424, 65273197441, 346140738426, 1822550628548, 9537844921742, 49656492435589, 257361923589952, 1328581649004624, 6834526602246290

Offset

1,1

Comments

Column 3 of A254512

Links

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

Example

Some solutions for n=2
..0..1..1..0..0....1..1..1..0..1....1..0..1..0..0....0..0..0..0..1
..0..0..0..1..0....1..0..0..0..1....1..0..1..1..0....0..0..0..0..0
..0..1..1..1..1....0..0..0..0..0....1..1..1..1..0....1..0..0..1..0
..1..0..1..1..1....0..1..0..0..0....1..1..1..1..0....0..0..0..1..1

Crossrefs

Sequence in context: A236882 A252325 A252322 * A254514 A254814 A275158

Adjacent sequences: A254504 A254505 A254506 * A254508 A254509 A254510

Keyword

nonn

Author

R. H. Hardin, Jan 31 2015

Status

approved