A113121 a(n) = smallest number of syllables necessary to communicate n by phone, in English.

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, 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, 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

Offset

0,8

Comments

Without "and"; 0 spelled "O", like in "Five o'clock".

Links

Table of n, a(n) for n=0..104.

The Math Forum, Ask Dr. Math.

Example

a(11)=2 because "one-one" is shorter than "e-le-ven";
a(69)=2 because "six-nine" and not "six-ty-nine";
a(100)=2 because "hundred" and not "one-O-O"

Crossrefs

Sequence in context: A079951 A095407 A038605 * A109036 A085031 A341974

Adjacent sequences: A113118 A113119 A113120 * A113122 A113123 A113124

Keyword

base,easy,nonn,word

Author

Alexandre Wajnberg, Jan 03 2006

Status

approved