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A038393 Number of 4n-step self-avoiding closed paths on first quadrant grid, passing through origin, symmetric about line y = x. 0
1, 1, 2, 6, 20, 78, 342, 1608, 7966, 41054, 218342, 1191038, 6635164, 37621952, 216557220, 1262829914, 7447921572 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
LINKS
CROSSREFS
Cf. A034010.
Sequence in context: A150182 A098469 A081563 * A357798 A027221 A346747
KEYWORD
nonn
AUTHOR
STATUS
approved

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Last modified April 19 19:02 EDT 2024. Contains 371798 sequences. (Running on oeis4.)