login
A151541
Number of 2-sided triangular strip polyedges with n cells.
15
1, 3, 8, 32, 123, 523, 2201, 9443, 40341, 172649, 736926, 3141607, 13367012
OFFSET
1,2
COMMENTS
Also number of unrooted self-avoiding walks of n steps on hexagonal [ =triangular ] lattice. - Hugo Pfoertner, Jun 23 2018
LINKS
Eric Weisstein's World of Mathematics, Polyedge
CROSSREFS
Asymptotically approaches (1/24)*A001334(n) for increasing n.
Sequence in context: A148913 A148914 A148915 * A022563 A103939 A094610
KEYWORD
nonn,walk,hard,more
AUTHOR
Ed Pegg Jr, May 13 2009
EXTENSIONS
a(9)-a(13) from Joseph Myers, Oct 05 2011
STATUS
approved