A254993 Number of (n+2)X(3+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the diagonal and antidiagonal minus the sum of the medians of the central row and column nondecreasing horizontally and vertically

10762, 70331, 503440, 3575520, 24807024, 173958123, 1221043730, 8537684121, 59658144024, 417154937620, 2916775152586, 20390101198121, 142537371192124, 996443590716368, 6965819062215440, 48694860884923852, 340401812421593696

Offset

1,1

Comments

Column 3 of A254998

Links

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

Example

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

Crossrefs

Cf. A254998

Sequence in context: A211607 A258513 A258506 * A023084 A325885 A034231

Adjacent sequences: A254990 A254991 A254992 * A254994 A254995 A254996

Keyword

nonn

Author

R. H. Hardin, Feb 11 2015

Status

approved