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Number of strictly increasing addition chains of length n.
4

%I #10 Oct 07 2013 11:29:28

%S 1,1,2,6,25,135,913,7499,73191,833597,10917343,162402263,2715430931,

%T 50576761471,1041203832858,23529845888598

%N Number of strictly increasing addition chains of length n.

%D M. Torelli, Increasing integer sequences and Goldbach's conjecture, preprint, 1996.

%H M. Torelli, <a href="http://dx.doi.org/10.1051/ita:2006017">Increasing integer sequences and Goldbach's conjecture</a>, RAIRO - Theoretical Informatics and Applications, vol.40, no.02 (April 2006), pp.107-121.

%H David Bruce Wilson, <a href="http://dbwilson.com">Home page</a>

%K nonn

%O 0,3

%A Mauro Torelli (torelli(AT)hermes.mc.dsi.unimi.it)

%E More terms from David Bruce Wilson