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A232947 Number of nX7 0..3 arrays with no element x(i,j) adjacent to value 3-x(i,j) horizontally, vertically or antidiagonally, and top left element zero 1
729, 114243, 22471303, 4586348177, 950054488141, 197901829874065, 41313911641960579, 8631911498064803251, 1804078633382571536609, 377098877333784048574025, 78826795850335605854348539 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 7 of A232948
LINKS
EXAMPLE
Some solutions for n=2
..0..2..0..2..2..2..3....0..1..3..2..3..3..1....0..0..0..0..1..0..0
..2..2..2..2..3..2..3....1..3..2..3..3..1..1....2..0..1..0..0..0..2
CROSSREFS
Sequence in context: A224378 A223479 A223503 * A016842 A231861 A232954
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 02 2013
STATUS
approved

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Last modified February 24 01:16 EST 2024. Contains 370288 sequences. (Running on oeis4.)