A254517 Number of (6+2)X(n+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.

833037, 8282251, 74724261, 648678493, 6835294784, 70328373238, 690528516461, 6873737047337, 67863913445117, 665102486533923, 6483379051873678, 63137552262813647, 612196906415543312, 5925295206911839909

Offset

1,1

Comments

Row 6 of A254512

Links

R. H. Hardin, Table of n, a(n) for n = 1..114

Example

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

Crossrefs

Sequence in context: A179727 A256769 A254510 * A254817 A305827 A113150

Adjacent sequences: A254514 A254515 A254516 * A254518 A254519 A254520

Keyword

nonn

Author

R. H. Hardin, Jan 31 2015

Status

approved