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 A208683 Number of n X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 1 1 and 1 0 1 vertically. 1
 2, 16, 78, 927, 12096, 301035, 6398617, 358035204, 14996975204, 1866358422700, 142488171799491, 43994512655386488, 5996882020078059149, 4716359423241404452425, 1123534623785504112746542 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A208688. LINKS R. H. Hardin, Table of n, a(n) for n = 1..37 EXAMPLE Some solutions for n=4 ..0..1..1..0....0..1..1..1....0..1..0..0....1..0..1..0....0..1..1..0 ..1..1..0..1....0..1..1..0....1..1..1..0....1..1..1..1....0..1..1..0 ..0..1..0..0....1..1..0..0....0..1..0..1....1..0..1..0....1..1..0..1 ..0..1..0..0....0..1..0..1....0..1..0..0....1..0..1..0....0..1..0..0 CROSSREFS Cf. A208688. Sequence in context: A208102 A207723 A208835 * A197992 A265173 A264573 Adjacent sequences:  A208680 A208681 A208682 * A208684 A208685 A208686 KEYWORD nonn AUTHOR R. H. Hardin Mar 01 2012 STATUS approved

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Last modified January 18 00:51 EST 2022. Contains 350410 sequences. (Running on oeis4.)