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 A180991 Number of (n+2)xn binary matrices with rows and then columns in strictly increasing order as binary numbers 0
 0, 0, 4, 196, 17630, 3673129, 1986193307, 3003748718884, 13426920301736657, 185166591284225200707, 8146406517582852344067961, 1173623326436235078315237985776 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS Subdiagonal 2 of A180989 LINKS EXAMPLE All solutions for 5X3 ..0..0..0....0..0..1....0..0..1....0..1..1 ..0..1..1....0..1..0....0..1..1....1..0..0 ..1..0..0....1..0..0....1..0..0....1..0..1 ..1..0..1....1..0..1....1..0..1....1..1..0 ..1..1..0....1..1..0....1..1..0....1..1..1 CROSSREFS Sequence in context: A017546 A144044 A221197 * A279803 A209288 A263422 Adjacent sequences:  A180988 A180989 A180990 * A180992 A180993 A180994 KEYWORD nonn AUTHOR R. H. Hardin Sep 30 2010 STATUS approved

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Last modified September 27 07:38 EDT 2021. Contains 347673 sequences. (Running on oeis4.)