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A225020 Number of (n+1)X2 0..2 matrices with each 2X2 permanent equal 1
81, 253, 759, 2653, 9273, 34545, 130067, 502563, 1957855, 7707477, 30479641, 121049341, 481805459, 1921111559, 7667874767, 30628405561, 122397615337, 489285404561, 1956323203363, 7823125185531, 31286692332191, 125131311950285 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 1 of A225027

LINKS

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

FORMULA

Empirical: a(n) = 6*a(n-1) +8*a(n-2) -89*a(n-3) -3*a(n-4) +522*a(n-5) -118*a(n-6) -1489*a(n-7) +342*a(n-8) +2002*a(n-9) -380*a(n-10) -992*a(n-11) +192*a(n-12)

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A236886 A206142 A225027 * A219131 A236789 A236798

Adjacent sequences:  A225017 A225018 A225019 * A225021 A225022 A225023

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 24 2013

STATUS

approved

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Last modified January 24 09:20 EST 2022. Contains 350534 sequences. (Running on oeis4.)