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 A267265 Number of 4Xn arrays containing n copies of 0..4-1 with every element equal to or 1 greater than any north, northeast or northwest neighbors modulo 4 and the upper left element equal to 0. 1
 1, 1, 1, 1, 1, 1, 1, 9, 87, 865, 7649, 61021, 458527, 3292439, 22907789, 155639305, 1038112235, 6824466823, 44346420219, 285480376511, 1823828784941, 11579358641469, 73141158203461, 460054937791477, 2883707639144059 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,8 COMMENTS Row 4 of A267264. LINKS R. H. Hardin, Table of n, a(n) for n = 1..31 EXAMPLE Some solutions for n=12 ..0..1..1..2..2..2..3..2..3..3..0..0....0..0..3..0..0..1..1..2..2..2..2..1 ..1..1..2..2..2..3..3..3..3..0..0..1....0..0..0..0..1..1..2..2..3..3..2..2 ..1..2..2..2..3..3..0..0..0..0..1..1....1..0..0..1..1..2..2..3..3..3..3..3 ..2..2..3..3..3..0..0..1..0..1..1..1....1..1..1..1..2..2..3..3..3..0..0..3 CROSSREFS Cf. A267264. Sequence in context: A144852 A153191 A223277 * A152264 A035101 A245491 Adjacent sequences:  A267262 A267263 A267264 * A267266 A267267 A267268 KEYWORD nonn AUTHOR R. H. Hardin, Jan 12 2016 STATUS approved

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Last modified December 9 22:27 EST 2019. Contains 329880 sequences. (Running on oeis4.)