A204874 Number of (n+1)X7 0..3 arrays with the permanents of all 2X2 subblocks equal and nonzero

36285, 1174669, 11644559, 320519921, 3677014705, 94493071327, 1170722541163, 28674816027923, 375190755400931, 8831187451636669, 120712083104557267, 2744638222500107219, 38929895065086949097, 858589315995824785575

Offset

1,1

Comments

Column 6 of A204876

Links

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

Example

Some solutions for n=4
..2..3..0..3..0..3..0....1..0..1..0..1..0..1....2..0..2..1..2..0..2
..1..3..3..1..3..3..3....0..1..3..1..2..1..0....1..1..2..0..2..1..3
..2..3..0..3..0..3..0....1..0..1..0..1..0..1....1..1..0..1..2..0..2
..1..3..3..3..3..2..3....0..1..1..1..1..1..1....1..1..2..0..2..1..2
..2..3..0..3..0..3..0....1..1..0..1..0..1..0....1..1..0..1..2..0..2

Crossrefs

Sequence in context: A138556 A236298 A249083 * A234858 A234856 A222952

Adjacent sequences: A204871 A204872 A204873 * A204875 A204876 A204877

Keyword

nonn

Author

R. H. Hardin Jan 20 2012

Status

approved