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A190795 Number of two-sided n-step prudent walks ending on the top side or the right side of their boxes, avoiding two consecutive west steps and south steps. 0
1, 4, 8, 22, 52, 130, 316, 774, 1884, 4588, 11152, 27088, 65730, 159388, 386248, 935496, 2264662, 5479952 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

REFERENCES

S. Gao, H. Niederhausen, Sequences Arising From Prudent Self-Avoiding Walks (submitted to INTEGERS: The Electronic Journal of Combinatorial Number Theory).

LINKS

Table of n, a(n) for n=1..18.

CROSSREFS

Sequence in context: A322284 A175655 A000639 * A052528 A058855 A297339

Adjacent sequences:  A190792 A190793 A190794 * A190796 A190797 A190798

KEYWORD

nonn,walk

AUTHOR

Shanzhen Gao, May 20 2011

STATUS

approved

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Last modified November 12 04:21 EST 2019. Contains 329051 sequences. (Running on oeis4.)