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A205195 Number of (n+1)X3 0..3 arrays with rows and columns of permanents of all 2X2 subblocks lexicographically nondecreasing, and all 2X2 permanents nonzero 1
1720, 47900, 1256641, 25243114, 469617426, 7313092616, 106645806148, 1386271311184, 17063356609500, 194264369735315, 2113694462920360, 21750782413280669, 215532030982525812, 2048376973087641777 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 2 of A205198
LINKS
EXAMPLE
Some solutions for n=4
..3..2..1....1..2..1....3..3..0....1..0..1....0..2..2....1..0..3....0..3..0
..1..1..2....1..3..2....1..0..1....0..1..1....1..0..3....3..3..2....2..0..3
..3..2..3....1..3..0....2..3..1....1..1..1....1..2..1....1..3..2....1..3..2
..3..0..1....1..3..2....0..2..1....3..3..0....0..2..2....3..3..3....1..3..1
..2..2..3....1..3..2....2..1..2....3..1..1....1..2..1....2..2..3....1..3..2
CROSSREFS
Sequence in context: A276458 A252857 A234906 * A200958 A048958 A145648
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 23 2012
STATUS
approved

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Last modified March 28 18:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)