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A008933
Number of strictly increasing addition chains of length n.
4
1, 1, 2, 6, 25, 135, 913, 7499, 73191, 833597, 10917343, 162402263, 2715430931, 50576761471, 1041203832858, 23529845888598
OFFSET
0,3
REFERENCES
M. Torelli, Increasing integer sequences and Goldbach's conjecture, preprint, 1996.
LINKS
M. Torelli, Increasing integer sequences and Goldbach's conjecture, RAIRO - Theoretical Informatics and Applications, vol.40, no.02 (April 2006), pp.107-121.
David Bruce Wilson, Home page
CROSSREFS
Sequence in context: A247499 A124373 A010787 * A020010 A375505 A102812
KEYWORD
nonn
AUTHOR
Mauro Torelli (torelli(AT)hermes.mc.dsi.unimi.it)
EXTENSIONS
More terms from David Bruce Wilson
STATUS
approved