A255749 Number of (n+2) X (n+2) 0..1 arrays with every 3 X 3 subblock sum of the medians of the diagonal and antidiagonal minus the two sums of the central row and column nondecreasing horizontally, vertically and ne-to-sw antidiagonally.

512, 7765, 51064, 118925, 196744, 473630, 739776, 2509233, 2833848, 15683280, 11443688, 103505234, 46550488, 787249560, 193199064, 5867658716, 807118704, 47135689832, 3371471992, 363872055032, 14120529208, 2966121353072

Offset

1,1

Comments

Diagonal of A255756.

Links

R. H. Hardin, Table of n, a(n) for n = 1..24

Example

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

Crossrefs

Cf. A255756.

Sequence in context: A258518 A222775 A257419 * A251186 A257202 A070057

Adjacent sequences: A255746 A255747 A255748 * A255750 A255751 A255752

Keyword

nonn

Author

R. H. Hardin, Mar 05 2015

Status

approved