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A205286 Number of (n+1)X2 0..2 arrays with permanents of 2X2 subblocks differing from horizontal and vertical neighbor permanents 2
81, 476, 2766, 15728, 89630, 511044, 2913944, 16611380, 94699360, 539880924, 3077859284, 17546758636, 100033478620, 570287962208, 3251195031144, 18534964466228, 105667273378104, 602405957212488, 3434298293663288 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 1 of A205293

LINKS

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

FORMULA

Empirical: a(n) = 9*a(n-2) +54*a(n-3) +283*a(n-4) +688*a(n-5) +1396*a(n-6) +2004*a(n-7) -212*a(n-8) -4692*a(n-9) -13221*a(n-10) -22814*a(n-11) -14278*a(n-12) +4640*a(n-13) +31376*a(n-14) +58752*a(n-15) +41064*a(n-16) +7728*a(n-17) for n>19

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A236635 A236775 A205293 * A253407 A253400 A250620

Adjacent sequences:  A205283 A205284 A205285 * A205287 A205288 A205289

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 25 2012

STATUS

approved

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Last modified May 23 07:00 EDT 2019. Contains 323508 sequences. (Running on oeis4.)