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 A207240 Number of nX6 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 0 1 0 vertically 1
 18, 324, 1526, 7165, 40838, 197256, 886959, 4132837, 18825154, 83118767, 366894032, 1612009910, 7003691520, 30295384994, 130694823493, 561304207068, 2402966839572, 10265912202332, 43759103277417, 186155560434801 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 6 of A207242 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 EXAMPLE Some solutions for n=4 ..0..1..0..1..0..0....0..1..0..1..0..1....1..1..1..0..0..1....0..1..0..0..1..0 ..1..0..0..1..0..0....0..0..1..0..1..0....1..1..1..0..1..0....1..0..1..0..1..0 ..1..1..0..1..0..0....0..0..1..0..1..0....1..1..0..0..1..0....1..0..1..0..1..0 ..1..1..0..1..0..0....0..0..1..0..1..0....0..0..1..0..1..0....1..0..1..0..1..0 CROSSREFS Sequence in context: A187381 A207109 A207465 * A207498 A285878 A171292 Adjacent sequences:  A207237 A207238 A207239 * A207241 A207242 A207243 KEYWORD nonn AUTHOR R. H. Hardin Feb 16 2012 STATUS approved

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Last modified December 6 16:03 EST 2021. Contains 349565 sequences. (Running on oeis4.)