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 A230474 Number of 6Xn 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 upper left element zero 1
 0, 108, 212124, 89087722, 26096227960, 8449174734112, 2758566554003680, 904244478978586756, 295941932913142341798, 96849125946877824151546, 31693448711292793725498984, 10371762620901942054031501472 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Row 6 of A230469 LINKS R. H. Hardin, Table of n, a(n) for n = 1..44 EXAMPLE Some solutions for n=3 ..0..1..0....0..1..0....0..1..0....0..1..0....0..1..0....0..1..1....0..1..1 ..0..0..2....2..2..2....2..1..0....2..2..2....2..2..0....2..2..0....2..2..1 ..0..2..1....2..0..1....1..0..2....2..0..1....2..0..1....1..0..0....2..0..2 ..1..1..1....1..1..0....2..2..0....2..1..2....2..2..2....2..1..2....2..1..2 ..0..0..2....0..2..0....0..1..1....2..2..0....1..1..0....2..2..0....0..0..2 ..2..1..0....2..0..1....2..0..0....1..0..1....0..2..1....2..0..1....1..2..2 CROSSREFS Sequence in context: A202634 A270255 A269269 * A030248 A033535 A077728 Adjacent sequences: A230471 A230472 A230473 * A230475 A230476 A230477 KEYWORD nonn AUTHOR R. H. Hardin, Oct 20 2013 STATUS approved

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Last modified August 12 19:26 EDT 2024. Contains 375113 sequences. (Running on oeis4.)