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 A240517 Number of nX6 0..1 arrays with no element equal to exactly two horizontal and vertical neighbors, with new values 0..1 introduced in row major order 1
 13, 42, 196, 1080, 6205, 37624, 231665, 1440880, 9082172, 57688194, 368247913, 2360899744, 15185317117, 97900171826, 632299574804, 4089240246144, 26472263944273, 171499150683304, 1111664911286921, 7208828328348392 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 6 of A240519 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 EXAMPLE Some solutions for n=4 ..0..1..0..1..0..1....0..0..1..0..1..0....0..1..0..0..1..0....0..1..0..0..0..1 ..1..0..1..0..0..0....1..1..1..0..1..1....0..1..1..1..1..1....1..0..1..0..1..0 ..1..1..0..1..1..1....0..1..1..1..1..0....1..1..1..1..1..0....0..1..1..1..0..1 ..1..0..1..0..1..0....1..1..1..1..1..1....0..0..1..0..1..0....1..0..1..0..0..0 CROSSREFS Sequence in context: A243028 A242544 A301539 * A074022 A232448 A157835 Adjacent sequences:  A240514 A240515 A240516 * A240518 A240519 A240520 KEYWORD nonn AUTHOR R. H. Hardin, Apr 06 2014 STATUS approved

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Last modified September 22 15:16 EDT 2018. Contains 315270 sequences. (Running on oeis4.)