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A204726 Number of (n+1)X3 0..4 arrays with the permanents of all 2X2 subblocks equal and nonzero 1
1624, 12744, 44726, 353626, 1425462, 10332706, 45388048, 307057212, 1435551124, 9233564740, 45214143964, 280355783930, 1421151419140, 8581104455222, 44642397960012, 264431250310716, 1402840195850906, 8195345840290280 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A204732

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A347039 A224722 A045288 * A022060 A107524 A097225

Adjacent sequences:  A204723 A204724 A204725 * A204727 A204728 A204729

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 18 2012

STATUS

approved

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Last modified October 26 20:42 EDT 2021. Contains 348269 sequences. (Running on oeis4.)