A254014 Number of (n+2)X(2+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally

2540, 7212, 26370, 98002, 279743, 774662, 2035893, 5114873, 12474341, 29590558, 68901604, 158137068, 357684484, 800611865, 1776191086, 3909310915, 8548743880, 18587419029, 40212191986, 86599353650, 185779037285, 397204639125

Offset

1,1

Comments

Column 2 of A254020

Links

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

Example

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

Crossrefs

Sequence in context: A206596 A334932 A254021 * A254888 A248997 A234407

Adjacent sequences: A254011 A254012 A254013 * A254015 A254016 A254017

Keyword

nonn

Author

R. H. Hardin, Jan 22 2015

Status

approved