A204730 Number of (n+1)X7 0..4 arrays with the permanents of all 2X2 subblocks equal and nonzero

171860, 10332706, 108530190, 6063334774, 72313926190, 3923500974342, 49973876676266, 2620184692100666, 35147734420956234, 1772864559414767572, 24904244389253270250, 1207168595561106330152, 17696904425164366165232

Offset

1,1

Comments

Column 6 of A204732

Links

R. H. Hardin, Table of n, a(n) for n = 1..44

Example

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

Crossrefs

Sequence in context: A236498 A246227 A206115 * A049053 A242980 A221742

Adjacent sequences: A204727 A204728 A204729 * A204731 A204732 A204733

Keyword

nonn

Author

R. H. Hardin Jan 18 2012

Status

approved