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A204832 Number of (n+1)X(n+1) 0..2 arrays with the permanents of all 2X2 subblocks equal and nonzero 0
56, 524, 7070, 247108, 11643054, 1289881302, 204749436552, 73036201343336, 38899944310300258, 45302488265102707276, 80802524916380070655310 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A204840

LINKS

Table of n, a(n) for n=1..11.

EXAMPLE

Some solutions for n=4

..1..0..1..2..1....0..2..1..2..1....2..2..2..1..0....2..1..0..1..2

..2..2..0..2..0....1..2..0..2..0....0..1..0..1..2....1..0..1..0..1

..0..1..1..1..1....0..2..1..2..1....2..0..2..0..2....1..1..2..1..0

..2..2..0..2..0....1..2..0..2..0....1..1..1..1..0....1..0..1..0..1

..1..0..1..1..1....1..0..1..2..1....1..1..1..1..2....1..1..2..1..2

CROSSREFS

Sequence in context: A219832 A219576 A219943 * A190536 A190070 A220930

Adjacent sequences:  A204829 A204830 A204831 * A204833 A204834 A204835

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 19 2012

STATUS

approved

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Last modified October 17 06:08 EDT 2019. Contains 328106 sequences. (Running on oeis4.)