Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
%I #3 Mar 30 2012 16:50:41
%S 1,3,12,38,128,373,1055,2765
%N A129012(3n+1).
%D J. R. Dias, The Periodic Table Set as a Unifying Concept in Going from Benzenoid Hydrocarbons to Fullerene Carbons, in "The Periodic Table: Into the 21st Century", Edited by D. H. Rouvray and R. B. King, Research Studies Press Ltd, Baldock, Hertfordshire, England, 2004, 371-396.
%Y Cf. A129012-A129021.
%K nonn
%O 0,2
%A _N. J. A. Sloane_, based on email from Jerry R. Dias (DiasJ(AT)umkc.edu), May 08 2007