A230976 Number of (n+2)X(7+2) 0..3 arrays x(i,j) with each element diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 4, no adjacent elements equal, and upper left element zero

34944, 6885376, 916182800, 173342326336, 35475345905904, 7053147648320400, 1388708377137781120, 274182072337500339600, 54206239527447927252960, 10714454616856090049527824, 2117614541783719562279014352

Offset

1,1

Comments

Column 7 of A230977

Links

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

Example

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

Crossrefs

Sequence in context: A247695 A204886 A257755 * A085847 A319589 A237065

Adjacent sequences: A230973 A230974 A230975 * A230977 A230978 A230979

Keyword

nonn

Author

R. H. Hardin, Nov 02 2013

Status

approved