A204721 Number of (n+1)X7 0..1 arrays with the permanents of 2X2 subblocks nondecreasing rightwards and downwards

3490, 115060, 2995945, 75805761, 1793675684, 41246881735, 924334074451, 20403964857427, 445490014489620, 9658996327389732, 208444292278978971, 4484720782054896901, 96300946931574527974, 2065291548346501509907

Offset

1,1

Comments

Column 6 of A204723

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=4
..1..1..0..1..1..1..0....0..1..0..0..0..0..1....1..0..0..0..0..1..1
..0..1..1..1..0..1..1....0..1..0..1..1..1..1....0..0..1..1..1..1..1
..1..1..0..1..1..1..0....0..1..0..1..0..1..0....1..1..1..0..1..1..1
..0..1..1..1..0..1..1....0..0..1..0..1..0..1....0..0..1..1..1..1..1
..1..1..0..1..1..0..1....0..1..1..1..1..1..0....1..1..1..1..1..1..1

Crossrefs

Sequence in context: A031737 A268156 A180994 * A204960 A249525 A252049

Adjacent sequences: A204718 A204719 A204720 * A204722 A204723 A204724

Keyword

nonn

Author

R. H. Hardin Jan 18 2012

Status

approved