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A204727 Number of (n+1)X4 0..4 arrays with the permanents of all 2X2 subblocks equal and nonzero 1
4772, 44726, 264998, 2122560, 14348560, 108530190, 763490340, 5669180550, 40529890856, 299152763686, 2156365512882, 15887979228428, 115125216329402, 847992795375562, 6168535964532854, 45448892886236444, 331648100487513774 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A204732

LINKS

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

EXAMPLE

Some solutions for n=4

..4..3..4..3....3..2..0..2....3..0..3..2....4..0..4..0....4..1..2..1

..0..1..0..1....4..0..4..3....1..2..0..2....4..1..1..1....0..1..2..1

..4..4..4..3....3..2..0..2....1..4..3..0....4..0..4..0....4..1..2..1

..0..1..0..1....1..2..4..1....1..2..0..2....3..1..2..1....4..0..4..0

..4..3..4..2....3..2..0..2....1..4..3..3....4..0..4..0....2..1..3..1

CROSSREFS

Sequence in context: A031747 A125949 A237214 * A203546 A189183 A237095

Adjacent sequences:  A204724 A204725 A204726 * A204728 A204729 A204730

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 18 2012

STATUS

approved

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Last modified October 19 08:33 EDT 2021. Contains 348074 sequences. (Running on oeis4.)