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A057647 Number of walks of length n on the upper-right part of the honeycomb lattice. 0
1, 2, 9, 38, 185, 914, 4706, 24632, 131309, 708284, 3861380, 21225588, 117511456, 654474352, 3664017964, 20604973852, 116332926949, 659097637368, 3745842085016, 21348227213714, 121974246173946, 698499504058204 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..21.

C. Banderier, Analytic combinatorics of random walks and planar maps, PhD Thesis, 2001.

CROSSREFS

Sequence in context: A151006 A151007 A151008 * A249925 A162972 A202832

Adjacent sequences:  A057644 A057645 A057646 * A057648 A057649 A057650

KEYWORD

nonn

AUTHOR

Cyril Banderier, Oct 12 2000

STATUS

approved

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Last modified March 24 01:20 EDT 2019. Contains 321444 sequences. (Running on oeis4.)