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A151540 Number of 1-sided triangular strip polyedges with n cells. 4

%I

%S 1,3,14,54,239,1007,4375,18728,80572,344651,1473402,6280556,26732173

%N Number of 1-sided triangular strip polyedges with n cells.

%H Ed Pegg, Jr., <a href="http://demonstrations.wolfram.com/PolyformExplorer/">Illustrations of polyforms</a>

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/Polyedge.html">Polyedge</a>

%Y Cf. A151539, A151541, A159867.

%K nonn,hard,more

%O 1,2

%A _Ed Pegg Jr_, May 13 2009

%E a(9)-a(13) from _Joseph Myers_, Oct 05 2011

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Last modified November 18 18:05 EST 2018. Contains 317323 sequences. (Running on oeis4.)