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A234755
Number of (n+1)X(3+1) 0..3 arrays with 2X2 edge jumps all no more than +1 in one of the clockwise or counterclockwise directions or both
1
8968, 646036, 41065150, 2683721676, 174451064914, 11352560005654, 738613242438722, 48057390396250352, 3126794045459927262, 203441328354140321486, 13236675571733137508104, 861229107849713487636906
OFFSET
1,1
COMMENTS
Column 3 of A234760
FORMULA
Empirical recurrence of order 55 (see link above)
EXAMPLE
Some solutions for n=1
..0..0..1..2....3..0..1..1....0..0..3..3....2..2..1..0....1..3..1..0
..2..1..0..3....2..1..1..0....2..1..2..3....2..1..2..2....2..2..1..2
CROSSREFS
Sequence in context: A034589 A237164 A250368 * A230839 A339348 A251234
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 30 2013
STATUS
approved