login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A029722 Smallest positive integer containing the n-th letter of the alphabet (in English), or -1 if no such integer exists. 3
1000, 1000000000, 1000000000000000000000000000, 100, 1, 4, 8, 3, 5, -1, -1, 11, 1000000, 1, 1, 1000000000000000000000000, 1000000000000000, 3, 6, 2, 4, 5, 2, 6, 20, -1 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

This uses the short scale for the names of large numbers. - Ken Takusagawa, Oct 11 2016

LINKS

Table of n, a(n) for n=1..26.

Jeff Miller, A Collection of Word Oddities and Trivia

EXAMPLE

C first occurs in "octillion".

MATHEMATICA

alphabet={"a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z"};

candidates=AppendTo[AppendTo[Range[19], Table[10*i, {i, 2, 10}]], Table[10^i, {i, 3, 63, 3}]]//Flatten//Quiet;

f[10]=f[11]=f[26]=-1; f[n_]:=Module[{k=1},

While[StringContainsQ[ToString[IntegerName[candidates[[k]], "Words"]], alphabet[[n]]]!=True, k++]; candidates[[k]]];

f/@Range[26] (* Ivan N. Ianakiev, Apr 10 2018 *)

CROSSREFS

Differs from A111098 because "zero" is not permitted.

Cf. A114181.

Sequence in context: A013793 A013856 A111098 * A282638 A283014 A283058

Adjacent sequences:  A029719 A029720 A029721 * A029723 A029724 A029725

KEYWORD

fini,sign,full,word

AUTHOR

Anonymous submission.

EXTENSIONS

a(5) corrected by Donovan Johnson, Dec 08 2004

Edited: Definition extended, "octillian" corrected, link and cross-reference provided; and sequence completed by Rick L. Shepherd, Aug 29 2009

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 23 10:55 EDT 2019. Contains 321424 sequences. (Running on oeis4.)