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A013993
Number of edge-disjoint paths between opposite corners of 4 X n grid.
6
1, 1, 16, 335, 9754, 323632, 11171466, 389866263, 13662905466, 479251547011, 16821606120516, 590415835527858, 20726430358013659, 727543012137899046, 25540208938124629118, 896540705406585866451
OFFSET
0,3
REFERENCES
rec.puzzles Dec 10 1995.
LINKS
KEYWORD
nonn
AUTHOR
STATUS
approved