OFFSET
1,1
COMMENTS
First differences = 2*A030124.
REFERENCES
E. Angelini, "Jeux de suites", in Dossier Pour La Science, pp. 32-35, Volume 59 (Jeux math'), April/June 2008, Paris.
FORMULA
a(n) = 2*A005228(n).
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Eric Angelini, Aug 30 2005
EXTENSIONS
Edited, corrected and extended by Ray Chandler, Sep 06 2005
STATUS
approved