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A129019 A129017(3n+1). 1
1, 4, 19, 70, 239, 726, 2062 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

REFERENCES

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.

LINKS

Table of n, a(n) for n=0..6.

CROSSREFS

Cf. A129012-A129021.

Sequence in context: A100185 A291888 A217324 * A167247 A267192 A219972

Adjacent sequences:  A129016 A129017 A129018 * A129020 A129021 A129022

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, based on email from Jerry R. Dias (DiasJ(AT)umkc.edu), May 08 2007

STATUS

approved

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Last modified August 13 14:01 EDT 2022. Contains 356091 sequences. (Running on oeis4.)