A180994 Number of (n+5)xn binary matrices with rows and then columns in strictly increasing order as binary numbers

0, 0, 1, 3489, 5754681, 15031688395, 85146473995739, 1221835613883859705, 48879331646085761019504, 5817604509321397715670886548, 2157782748250229924192241839158932

Offset

1,4

Comments

Subdiagonal 5 of A180989

Links

Table of n, a(n) for n=1..11.

Example

All solutions for 8X3
..0..0..0
..0..0..1
..0..1..0
..0..1..1
..1..0..0
..1..0..1
..1..1..0
..1..1..1

Crossrefs

Sequence in context: A031557 A031737 A268156 * A204721 A204960 A249525

Adjacent sequences: A180991 A180992 A180993 * A180995 A180996 A180997

Keyword

nonn

Author

R. H. Hardin Sep 30 2010

Status

approved