

A206213


Number of (n+1)X7 0..2 arrays with every 2X3 or 3X2 subblock having exactly two equal edges, and new values 0..2 introduced in row major order


1



8802, 9072, 14416, 74080, 359424, 1764000, 9438912, 46540800, 228988224, 1227058560, 6050304000, 29768469120, 159517612800, 786539520000, 3869900985600, 20737289664000, 102250137600000, 503087128128000
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OFFSET

1,1


COMMENTS

Column 6 of A206215


LINKS

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


FORMULA

Empirical: a(n) = 130*a(n3) for n>9


EXAMPLE

Some solutions for n=4
..0..1..0..2..1..1..0....0..0..1..2..2..1..1....0..1..1..2..1..1..2
..1..1..0..0..2..1..1....0..1..2..2..0..2..2....2..0..1..1..0..1..1
..0..0..2..0..0..2..1....1..2..2..0..2..2..0....2..2..0..1..1..2..1
..1..0..0..2..0..0..2....2..2..0..2..2..1..2....0..2..2..0..1..1..0
..2..1..0..0..2..0..2....0..0..2..2..1..2..2....1..0..2..2..0..1..0


CROSSREFS

Sequence in context: A249956 A031791 A179128 * A270609 A230335 A183752
Adjacent sequences: A206210 A206211 A206212 * A206214 A206215 A206216


KEYWORD

nonn


AUTHOR

R. H. Hardin Feb 04 2012


STATUS

approved



