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A206361 Number of (n+1)X2 0..3 arrays with every 2X3 or 3X2 subblock having no more than two equal edges, and new values 0..3 introduced in row major order 1
15, 151, 1990, 27548, 383021, 5327971, 74147694, 1031960617, 14362233044, 199885520104, 2781900205987, 38716999664337, 538842441505438, 7499320389877491, 104371523732504906, 1452586950516895892 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 1 of A206366

LINKS

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

FORMULA

Empirical: a(n) = 16*a(n-1) -42*a(n-2) +234*a(n-3) -784*a(n-4) +714*a(n-5) -609*a(n-6) +1008*a(n-7) for n>8

EXAMPLE

Some solutions for n=4

..0..0....0..0....0..0....0..0....0..0....0..0....0..0....0..0....0..0....0..0

..0..1....1..1....0..1....0..1....1..0....1..1....0..1....1..1....1..1....0..1

..1..0....0..0....1..2....2..3....0..1....0..0....1..0....2..0....1..0....1..0

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

..2..1....0..1....2..1....3..1....2..2....1..2....2..2....0..1....3..3....0..1

CROSSREFS

Sequence in context: A021364 A206366 A016103 * A041424 A021124 A004322

Adjacent sequences:  A206358 A206359 A206360 * A206362 A206363 A206364

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 06 2012

STATUS

approved

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Last modified April 16 02:33 EDT 2014. Contains 240534 sequences.