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A230909
Number of nX7 0..3 arrays x(i,j) with each element horizontally, vertically 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
1
0, 882, 11324, 130178, 1603356, 20713786, 271505344, 3573938648, 47146678686, 622659105328, 8227931798990, 108754213190144, 1437675672142318, 19006711444189020, 251286474365447448, 3322305731095306986
OFFSET
1,2
COMMENTS
Column 7 of A230910
LINKS
EXAMPLE
Some solutions for n=4
..0..1..2..0..1..3..2....0..3..0..3..1..0..1....0..3..0..2..3..0..2
..3..0..3..2..0..1..0....1..2..1..0..2..3..2....1..2..1..0..1..3..0
..2..1..0..3..2..3..2....3..0..3..1..0..1..0....3..0..3..2..0..1..2
..0..3..2..0..1..0..1....2..1..0..3..2..3..2....2..1..0..1..3..0..3
CROSSREFS
Sequence in context: A092675 A135127 A338538 * A035758 A107554 A089519
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 01 2013
STATUS
approved