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 A231079 Number of nX6 0..2 arrays x(i,j) with each element horizontally, diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 3 and at least one element with value (x(i,j)-1) mod 3, and upper left element zero 0
 0, 1840, 38000, 18937480, 1782634608, 417868659864, 61990953794520, 11645089669025104, 1940181166627241952, 343673876486436908888, 59011109416261093990112, 10294673560727171622076712 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Column 6 of A231080 LINKS Table of n, a(n) for n=1..12. EXAMPLE Some solutions for n=3 ..0..1..2..2..1..2....0..1..2..1..0..3....0..1..2..0..1..2....0..1..2..0..1..2 ..2..3..2..1..3..0....0..3..2..1..2..3....2..3..0..0..3..0....2..3..0..2..3..0 ..2..1..0..2..1..0....2..1..2..1..0..1....2..1..3..2..1..2....2..1..2..0..1..0 CROSSREFS Sequence in context: A159202 A238294 A274683 * A257319 A287172 A243482 Adjacent sequences: A231076 A231077 A231078 * A231080 A231081 A231082 KEYWORD nonn AUTHOR R. H. Hardin, Nov 03 2013 STATUS approved

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Last modified June 17 10:05 EDT 2024. Contains 373445 sequences. (Running on oeis4.)