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A185512 Number of (n+1)X(n+1) 0..2 arrays with every 2X2 subblock singular 1
31, 1489, 154561, 80761059, 96865190255, 525819969687473, 7163899183570889649, 401495654334865659721795, 61022067811287778788163474527, 35442207739725827931704064596045201 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A185521

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for 3X3

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

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

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

CROSSREFS

Sequence in context: A159487 A130661 A187701 * A221444 A185665 A183883

Adjacent sequences:  A185509 A185510 A185511 * A185513 A185514 A185515

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 29 2011

STATUS

approved

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Last modified May 22 09:50 EDT 2022. Contains 353949 sequences. (Running on oeis4.)