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A050933 Numbers k with property that spelling k in American English requires a new letter of the alphabet. 2

%I

%S 0,1,2,3,4,5,6,8,11,20,100,1000,1000000,1000000000,1000000000000000,

%T 1000000000000000000000000,1000000000000000000000000000

%N Numbers k with property that spelling k in American English requires a new letter of the alphabet.

%C The large numbers are (new letter in uppercase): "one Billion" (10^9), "one Quadrillon" (10^15), "one sePtillion" (10^24) and "one oCtillion" (10^27). Their names and definitions are based on the American system.

%H Landon Curt Noll, <a href="http://www.isthe.com/cgi-bin/number.cgi">The English name of a number</a>

%H R. Rowlett, <a href="http://www.unc.edu/~rowlett/units/large.html">Names for large numbers</a>

%e Spelling "zero" requires letters "z", "e", "r", "o". Spelling "one" requires a new letter, "n". Spelling "two" requires new letters, "t" and "w"; etc. Letters "j" and "k" are never used.

%e "1000" (one thousand) is the smallest number that requires an "a".

%K easy,fini,full,nonn,word

%O 0,3

%A Jean Fontaine (jfontain(AT)odyssee.net), Dec 30 1999

%E Corrected by _Andrew Weimholt_, Sep 27 2009

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Last modified August 11 18:37 EDT 2020. Contains 336428 sequences. (Running on oeis4.)