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%I #9 Jan 24 2014 15:24:22
%S 1,1,1,3,8,13,14,14,24,74,112,125,125,165,265,1265,2568,12468,1002568,
%T 1001002568,1000001001002568,1000000001000001001002568,
%U 1001000000001000001001002568
%N Smallest integer whose name in colloquial American English (no "and"s) uses n different letters.
%C Sequence stops at a(23) since 24,25,26 can't be achieved.
%H Michael Keith, <a href="http://digitalcommons.butler.edu/wordways/vol32/iss3/5/">Some properties of one, two, three...</a>, Word Ways, 32:3 (1999), pp. 175-177.
%e a(5)=8 because "eight" is smallest number with 5 different letters.
%K nonn,word,fini,full
%O 1,4
%A Mike Keith (domnei(AT)aol.com)
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