1,2

"and" is used in number names and "-" is counted as a letter (e.g. "twenty-one" has more letters than "seventeen").

Table of n, a(n) for n=1..42.

Sean A. Irvine, Number names for terms in the sequence

Sequence in context: A175820 A127209 A052362 * A071197 A191067 A052363

Adjacent sequences: A001616 A001617 A001618 * A001620 A001621 A001622

word,nonn

N. J. A. Sloane.

Missing terms added by Sean A. Irvine, Oct 04 2012

approved