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A232427
Number of (n+1)X(3+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally or vertically
1
64, 1632, 33708, 650696, 14465384, 313201804, 6514702216, 139122934752, 2976033930696, 63123128916304, 1342119519069652, 28587959355513900, 608076772769769316, 12933230082531044888, 275207426260812160768
OFFSET
1,1
COMMENTS
Column 3 of A232431
FORMULA
Empirical recurrence of order 55 (see link above)
EXAMPLE
Some solutions for n=3
..2..0..1..0....0..1..0..1....2..0..1..2....1..0..1..0....2..2..1..2
..1..0..2..1....0..2..1..2....1..0..2..0....2..2..2..1....1..2..0..1
..0..1..2..2....1..1..0..2....0..2..1..1....2..1..0..1....0..2..2..1
..2..1..0..1....2..0..0..1....2..1..0..2....1..0..1..2....2..1..0..0
CROSSREFS
Sequence in context: A224205 A162994 A225981 * A194496 A297092 A284340
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 23 2013
STATUS
approved