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

 

Logo

Annual Appeal: Today, Nov 11 2014, is the 4th anniversary of the launch of the new OEIS web site. 70,000 sequences have been added in these four years, all edited by volunteers. Please make a donation (tax deductible in the US) to help keep the OEIS running.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A132363 Least natural number in English which requires exactly n characters to spell including spaces and hyphens, or 0 if no such number. The inverse of A052360. 0
1, 0, 3, 11, 15, 13, 17, 21, 24, 23, 73, 3000, 101, 104, 103, 111, 115, 113, 117, 121, 124, 123, 173, 323, 373, 1101, 1104, 1103, 1111, 1115, 1113, 1117, 1121, 1124, 1123, 1173, 1323, 1373, 3323, 3373, 11373, 13323, 13373, 17373, 21373, 23323, 23373, 73373 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,3

COMMENTS

This is to A052360 as A134629 is to A005589. Also assumes no 'and' is used to spell integers. This deviates from A134629 at a(10). "twenty-one" is the smallest integer whose standard English name has a hyphen. "one hundred" is the smallest integer whose standard English name has a space. "one hundred twenty-one" is the smallest integer whose standard English name has a space and a hyphen.

LINKS

Table of n, a(n) for n=3..50.

Eric Weisstein's World of Mathematics, Number

EXAMPLE

a(3) = 1 because "one" has 3 characters.

a(4) = 0 because "zero" has 4 characters.

a(5) = 3 because "three" has 5 characters.

a(6) = 11 because "eleven" has 6 characters.

a(7) = 15 because "fifteen" has 7 characters.

a(8) = 13 because "thirteen" has 8 characters.

a(9) = 17 because "seventeen" has 9 characters.

a(10) = 21 because "twenty-one" has 10 characters.

a(11) = 24 because "twenty-four" has 11 characters.

a(12) = 23 because "twenty-three" has 12 characters.

a(13) = 73 because "seventy-three" has 13 characters.

a(14) = 3000 because "three thousand" has 14 characters.

CROSSREFS

Cf. A005589, A052360, A119960, A129774, A134629.

Sequence in context: A186701 A022123 A235913 * A134629 A245522 A030715

Adjacent sequences:  A132360 A132361 A132362 * A132364 A132365 A132366

KEYWORD

easy,nonn,word

AUTHOR

Jonathan Vos Post, Nov 08 2007

EXTENSIONS

Corrected and extended by Martin Fuller, Nov 24 2007

STATUS

approved

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

Content is available under The OEIS End-User License Agreement .

Last modified November 28 16:35 EST 2014. Contains 250364 sequences.