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A302131
Number of (undirected) paths in the n-triangular honeycomb obtuse knight graph.
0
0, 0, 0, 9, 369, 931320, 1243953489
OFFSET
1,4
LINKS
Stan Wagon, Graph Theory Problems from Hexagonal and Traditional Chess, The College Mathematics Journal, Vol. 45, No. 4, September 2014, pp. 278-287.
Eric Weisstein's World of Mathematics, Graph Path
CROSSREFS
Sequence in context: A195888 A162084 A195518 * A051848 A238561 A290574
KEYWORD
nonn,more
AUTHOR
Eric W. Weisstein, Apr 02 2018
STATUS
approved