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 A266457 Number of 4Xn arrays containing n copies of 0..4-1 with no element 1 greater than its north neighbor modulo 4 and the upper left element equal to 0. 1
 2, 101, 6152, 442285, 34667512, 2875874396, 248188720768, 22053860939581, 2004232543930760, 185418855352374916, 17404087748977051168, 1653341486254703216284, 158659220471195369806688 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Row 4 of A266455. LINKS R. H. Hardin, Table of n, a(n) for n = 1..39 EXAMPLE Some solutions for n=3 ..0..2..3....0..3..0....0..1..2....0..0..1....0..2..3....0..1..2....0..2..1 ..2..1..1....2..1..3....3..3..2....0..2..3....0..2..2....3..3..0....3..1..0 ..0..3..0....1..0..2....2..3..0....3..1..2....0..1..1....3..2..2....3..3..0 ..2..1..3....1..3..2....1..1..0....3..1..2....3..3..1....1..0..1....1..2..2 CROSSREFS Cf. A266455. Sequence in context: A300102 A222449 A035325 * A028989 A113575 A173640 Adjacent sequences:  A266454 A266455 A266456 * A266458 A266459 A266460 KEYWORD nonn AUTHOR R. H. Hardin, Dec 29 2015 STATUS approved

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Last modified October 21 11:42 EDT 2019. Contains 328296 sequences. (Running on oeis4.)