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%I #10 Nov 29 2013 20:29:16
%S 1,2,6,12,25,85,194,590,1695,4879,19077,83994,167988,1041780,2448645,
%T 9677725,33250403,117499773,811972692,1762911460
%N Smallest integer not the sum of powers of some earlier terms.
%C At most one power of the previous terms can be used.
%C Each term is at least twice the previous term. Some terms are twice the previous one.
%e 21 = 1^1+2^3+12^1, 22 = 2^2+6^1+12^1, 23=1^1+2^2+6^1+12^1, 24 = 1^1+2^4+6^1+12^0
%Y See A122863 for another version.
%Y Cf. A122863.
%K nonn,nice
%O 1,2
%A _Erich Friedman_
%E More terms from _Andrew Weimholt_, Sep 11 2006 and _Jud McCranie_, Sep 13 2006
%E Edited by _Jud McCranie_, Sep 13 2006
%E a(19)-a(20) from _Donovan Johnson_, Aug 31 2010
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