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

 

Logo

Annual Appeal: Please make a donation (tax deductible in USA) to keep the OEIS running. Over 5000 articles have referenced us, often saying "we discovered this result with the help of the OEIS".

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A031291 Position of n-th 4 in A007376. 12
4, 19, 39, 59, 70, 72, 74, 76, 78, 79, 80, 82, 84, 86, 88, 99, 119, 139, 159, 179, 204, 234, 264, 294, 311, 314, 317, 320, 323, 324, 326, 329, 332, 335, 338, 354, 384, 414, 444, 474, 504, 534, 564, 594, 611, 614, 617, 620, 623, 624 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

A007376(a(n)) = 4.

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 1..10000

PROG

(Haskell)

import Data.List (elemIndices)

a031291 n = a031291_list !! (n-1)

a031291_list = map (+ 1) $ elemIndices 4 a007376_list

-- Reinhard Zumkeller, Jul 28 2011

CROSSREFS

Cf. A193428; A031287, A031288, A031289, A031290, A031292, A031293, A031294, A031295, A031296.

Sequence in context: A028564 A003338 A047715 * A210374 A134538 A024013

Adjacent sequences:  A031288 A031289 A031290 * A031292 A031293 A031294

KEYWORD

nonn,less,base

AUTHOR

Clark Kimberling

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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified December 10 23:13 EST 2016. Contains 279021 sequences.