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A205201 Number of (n+1)X4 0..2 arrays with the permanents of 2X2 subblocks nondecreasing rightwards and downwards 1
2830, 71355, 1649549, 30972970, 560385415, 9153899777, 145848261106, 2212185100843, 33020359800288, 481447058537957, 6954829242271663, 99373631556461784, 1412980217264335644, 19991930404931305073 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A205206

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A271580 A237063 A251014 * A205059 A232762 A284888

Adjacent sequences:  A205198 A205199 A205200 * A205202 A205203 A205204

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 23 2012

STATUS

approved

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Last modified January 17 05:13 EST 2022. Contains 350378 sequences. (Running on oeis4.)