A121142 - OEIS

%I #3 Mar 30 2012 16:50:30

%S 1,1,1,4,16,100,625,4300,29584,206572,1442401

%N Numbers of isomers of unbranched a-4-catapolydecagons - see Brunvoll reference for precise definition.

%D J. Brunvoll, S. J. Cyvin and B. N. Cyvin, Isomer enumeration of polygonal systems..., J. Molec. Struct. (Theochem), 364 (1996), 1-13.

%K nonn

%O 0,4

%A _N. J. A. Sloane_, Aug 13 2006