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

0, 1, 2, 3, 4, 5, 6, 8, 11, 20, 100, 1000, 1000000, 1000000000, 1000000000000000, 1000000000000000000000000, 1000000000000000000000000000

Offset: 0

Author

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

Keywords

• easy
• fini
• full
• nonn
• word

Comments

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.

Examples

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

Links

• Landon Curt Noll, The English name of a number
• R. Rowlett, Names for large numbers

Extensions

Corrected by Andrew Weimholt, Sep 27 2009