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 A207354 Number of n X 4 0..2 arrays avoiding the pattern z+1 z+1 z horizontally and z-1 z-1 z vertically. 1
 69, 4761, 244134, 12218660, 607211313, 30147535858, 1498532240063, 74502855991182, 3704761167895267, 184230472617367825, 9161522306169565926, 455590132335964207843, 22655874527055217183480, 1126645426342829794990441 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 4 of A207358. LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 EXAMPLE Some solutions for n=4 ..2..2..2..2....2..2..2..2....1..2..2..2....0..2..2..0....2..1..0..2 ..2..1..0..2....2..1..0..0....1..2..2..2....1..0..0..0....1..2..2..2 ..2..0..0..2....1..1..1..1....1..2..1..1....2..2..2..2....1..0..1..1 ..1..0..2..2....2..1..2..2....1..2..1..1....0..0..2..0....0..0..2..0 CROSSREFS Cf. A207358. Sequence in context: A207210 A206953 A206730 * A207985 A207197 A207217 Adjacent sequences: A207351 A207352 A207353 * A207355 A207356 A207357 KEYWORD nonn AUTHOR R. H. Hardin, Feb 17 2012 STATUS approved

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Last modified November 29 12:29 EST 2022. Contains 358427 sequences. (Running on oeis4.)