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A129017(3n+1).
1

%I #3 Mar 30 2012 16:50:41

%S 1,4,19,70,239,726,2062

%N A129017(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