A164789 a(n) is the smallest number which has in its English name the letter "o" in the n-th position, or -1 if no such number exists.

1, 4, 2, 0, 4000000000000000000000000000, 41, 21, 24, 22, 72, 101, 104, 102, 304, 302, 141, 121, 124, 122, 172, 322, 372, 1104, 1102, 1304, 1302, 1141, 1121, 1124, 1122, 1172, 1322, 1372, 3322, 3372, 11372, 13322, 13372, 17372, 23322, 23372, 73372, 101372, 103322, 103372

Offset

1,2

Links

Table of n, a(n) for n=1..45.

Example

a(1)=1 ("One"), a(2)=4 ("fOur"), a(3)=2 ("twO"), a(4)=0 ("zerO"), a(5)=4*10^27 ("fourOctillion").

Crossrefs

Cf. A164790 ("e"), A164791 ("n"), A164792 ("t"), A164793 ("i").

Cf. A164794 ("f"), A164795 ("h"), A164796 ("r"), A164797 ("u").

Sequence in context: A107724 A247092 A177715 * A203986 A204690 A309784

Adjacent sequences: A164786 A164787 A164788 * A164790 A164791 A164792

Keyword

word,sign

Author

Claudio Meller, Aug 26 2009

Extensions

a(5) corrected and a(23) and beyond from Michael S. Branicky, Mar 25 2021

Status

approved