%I A001166 M3215 N1301
%S A001166 1,4,3,11,15,13,17,24,23,73,3000,11000,15000,101,104,103,111,115,113,
%T A001166 117,124,123,173,323,373,1104,1103,1111,1115,1113,1117,1124,1123,1173,
%U A001166 1323,1373,3123,3173,3323,3373,11373,13323,13373,17373,23323,23373,73373,
               101123
%N A001166 Smallest natural number requiring n letters in English.
%C A001166 In this version 101 is written "one hundred and one", etc.
%D A001166 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A001166 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 
               (includes this sequence).
%Y A001166 Cf. A000916, A014388, A045494, A045495, A080777.
%Y A001166 Sequence in context: A005013 A086564 A080777 this_sequence A065337 A072802 
               A093726
%Y A001166 Adjacent sequences: A001163 A001164 A001165 this_sequence A001167 A001168 
               A001169
%K A001166 word,nonn
%O A001166 3,2
%A A001166 N. J. A. Sloane (njas(AT)research.att.com).
%E A001166 Corrected and extended by Henry Bottomley (se16(AT)btinternet.com), Jan 
               28 2000
%E A001166 Further corrected and extended by Brian L. Galebach (sequence(AT)ProbabilitySports.com), 
               Feb 06 2004