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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..7.

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

Adjacent sequences:  A302128 A302129 A302130 * A302132 A302133 A302134

KEYWORD

nonn,more

AUTHOR

Eric W. Weisstein, Apr 02 2018

STATUS

approved

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Last modified September 19 23:59 EDT 2019. Contains 327207 sequences. (Running on oeis4.)