A237972 Number of (n+1)X(6+1) 0..3 arrays with the upper median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.

1074202, 14222512, 149625960, 2480183866, 43487194848, 713207137992, 12120042669700, 209264120975366, 3546371438646104, 60626491891291716, 1039560781186680172, 17749177199163181458, 303538610610211774240

Offset

1,1

Comments

Column 6 of A237974

Links

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

Example

Some solutions for n=1
..1..0..0..1..3..3..2....1..0..0..2..2..3..2....0..0..1..2..0..2..3
..3..0..3..0..2..1..2....3..1..0..1..3..2..0....2..0..2..0..1..2..3

Crossrefs

Sequence in context: A070042 A258061 A187125 * A252038 A236449 A352110

Adjacent sequences: A237969 A237970 A237971 * A237973 A237974 A237975

Keyword

nonn

Author

R. H. Hardin, Feb 16 2014

Status

approved