A178036 - OEIS

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A178036

Number of two-sided n-step prudent walks ending on the northeast corner of their box, avoiding more than two consecutive west steps and more than two consecutive south steps.

0

1, 2, 4, 10, 24, 58, 140, 340, 828, 2020, 4934, 12068, 29556, 72468, 177846, 436788, 1073438, 2576072

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

OFFSET

0,2

LINKS

Table of n, a(n) for n=0..17.

S. Gao and H. Niederhausen, Sequences Arising From Prudent Self-Avoiding Walks, 2010.

CROSSREFS

Sequence in context: A165409 A052542 A163271 * A191625 A253014 A110236

Adjacent sequences: A178033 A178034 A178035 * A178037 A178038 A178039

KEYWORD

nonn,walk,more

AUTHOR

Shanzhen Gao, May 17 2010

STATUS

approved