A253989 Number of (n+2)X(4+2) 0..1 arrays with every 3X3 subblock diagonal median plus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally

51856, 350496, 3060398, 30663580, 271991670, 2421183428, 22204822621, 200874606941, 1804016250888, 16218520500385, 145485498165518, 1300311665227409, 11601574865622528, 103327316503674567

Offset

1,1

Comments

Column 4 of A253993

Links

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

Example

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

Crossrefs

Sequence in context: A147530 A184454 A003134 * A253996 A258906 A234181

Adjacent sequences: A253986 A253987 A253988 * A253990 A253991 A253992

Keyword

nonn

Author

R. H. Hardin, Jan 21 2015

Status

approved