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%I #3 Mar 31 2012 10:30:59
%S 1,1,1,1,1,1,1,2,1,1,1,2,2,2,2,2,2,3,2,2,2,2,2,2,2,2,2,3,2,2,2,2,2,2,
%T 2,2,2,3,2,2,2,2,2,2,2,2,2,3,2,2,2,2,2,2,2,2,2,3,2,2,2,2,2,2,2,2,2,3,
%U 2,2,3,3,3,3,3,3,3,4,3,3,2,2,2,2,2,2,2,3,2,2,2,2,2,2,2,2,2,3,2,2,2,3,3,3,3
%N a(n) = smallest number of syllables necessary to communicate n by phone, in English.
%C Without "and"; 0 spelled "O", like in "Five o'clock".
%H The Math Forum, <a href="http://mathforum.org/library/drmath/view/62467.html">Ask Dr. Math</a>.
%e a(11)=2 because "one-one" is shorter than "e-le-ven";
%e a(69)=2 because "six-nine" and not "six-ty-nine";
%e a(100)=2 because "hundred" and not "one-O-O"
%K base,easy,nonn,word
%O 0,8
%A _Alexandre Wajnberg_, Jan 03 2006