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A206515 Number of (n+1)X3 0..3 arrays with every 2X3 or 3X2 subblock having no more than four equal edges, and new values 0..3 introduced in row major order 1
186, 10998, 695541, 44350086, 2830665213, 180689239504, 11534052523389, 736261766040550, 46998354497911525, 3000081595834713716, 191506483600891877185, 12224578599211771061590, 780340796424907303135629 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 2 of A206521
LINKS
FORMULA
Empirical: a(n) = 66*a(n-1) -116*a(n-2) -1310*a(n-3) -7016*a(n-4) -9076*a(n-5) -9408*a(n-6) -4662*a(n-7) -4635*a(n-8) -378*a(n-9) -648*a(n-10)
EXAMPLE
Some solutions for n=4
..0..1..0....0..1..0....0..0..1....0..1..0....0..0..0....0..1..1....0..1..0
..2..0..1....1..0..0....0..1..0....0..1..0....0..0..1....0..2..1....1..0..0
..0..2..0....1..0..2....2..2..1....0..1..0....2..3..2....1..1..0....0..1..1
..1..2..1....3..2..1....0..3..1....0..1..1....3..1..1....3..2..3....1..0..2
..3..0..0....1..0..3....0..1..0....0..0..0....1..3..3....3..0..0....3..0..1
CROSSREFS
Sequence in context: A230898 A241942 A161619 * A366488 A299830 A265171
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 08 2012
STATUS
approved

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Last modified July 12 12:19 EDT 2024. Contains 374247 sequences. (Running on oeis4.)