A204720 Number of (n+1)X6 0..1 arrays with the permanents of 2X2 subblocks nondecreasing rightwards and downwards

1267, 26128, 457635, 7549845, 118449078, 1793675684, 26575441925, 387101009622, 5580848551153, 79831422807638, 1136428975809462, 16120289112845166, 228155596334383367, 3224064782772702660, 45513153001824893788

Offset

1,1

Comments

Column 5 of A204723

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....1..1..1..0..1..1....1..0..0..1..1..1....1..1..0..0..0..1
..0..0..0..1..1..0....1..0..1..1..1..1....0..0..0..1..0..1....0..0..0..0..1..1
..0..0..1..0..1..1....0..1..0..1..1..1....0..1..0..0..1..1....0..0..1..0..1..0
..1..1..1..1..0..1....1..0..1..1..1..1....0..0..0..1..1..1....0..1..0..1..1..1
..0..1..0..1..1..0....1..1..0..1..1..1....1..1..1..1..1..1....0..1..1..0..1..0

Crossrefs

Sequence in context: A252562 A364610 A038652 * A204959 A231838 A231699

Adjacent sequences: A204717 A204718 A204719 * A204721 A204722 A204723

Keyword

nonn

Author

R. H. Hardin Jan 18 2012

Status

approved