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A235219
Number of (n+1)X(4+1) 0..2 arrays with 2X2 edge jumps all no more than +1 in one of the clockwise or counterclockwise directions or both
1
21693, 2667851, 306034401, 35761397619, 4160135051925, 484500703182059, 56410299169343241, 6568304367121299555, 764786841875168425237, 89049089478506554084619, 10368551123666181465422105
OFFSET
1,1
COMMENTS
Column 4 of A235223
FORMULA
Empirical recurrence of order 59 (see link above)
EXAMPLE
Some solutions for n=1
..1..0..1..0..0....1..0..0..2..1....1..1..0..1..0....1..0..1..1..0
..0..0..0..1..0....1..1..1..1..0....0..0..0..1..0....0..0..2..2..1
CROSSREFS
Sequence in context: A213870 A247694 A309964 * A232121 A232419 A251033
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 05 2014
STATUS
approved