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

Author

Claudio Meller, Aug 26 2009

Keywords

• word
• sign

Examples

			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").

Extensions

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