A253991 Number of (n+2)X(6+2) 0..1 arrays with every 3X3 subblock diagonal median plus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally.

914112, 8730836, 133063670, 2365554897, 36583132201, 592324411676, 10020346952054, 165655419206274, 2726242788022844, 45219114758109018, 748254334202788422, 12341763773894118813, 203685000508613187442

Offset

1,1

Comments

Column 6 of A253993

Links

R. H. Hardin, Table of n, a(n) for n = 1..107

Example

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

Crossrefs

Sequence in context: A237155 A112688 A273356 * A253998 A258908 A259012

Adjacent sequences: A253988 A253989 A253990 * A253992 A253993 A253994

Keyword

nonn

Author

R. H. Hardin, Jan 21 2015

Status

approved