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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A248918 a(n) = index of (n+1)-th prime power in A247665. 3
1, 2, 3, 4, 5, 7, 6, 8, 9, 31, 10, 11, 12, 27, 28, 14, 16, 63, 17, 18, 19, 20, 32, 21, 22, 23, 127, 24, 25, 26, 29, 115, 30, 33, 34, 35, 36, 37, 38, 39, 40, 111, 41, 255, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 56, 58, 59, 60, 61, 62, 64, 66, 67 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..66.

PROG

(Haskell)

import Data.List (elemIndex); import Data.Maybe (fromJust)

a248918 = (+ 1) . fromJust . (`elemIndex` a247665_list) . a000961 . (+ 1)

CROSSREFS

Cf. A248387 (subsequence), A000961.

Sequence in context: A269392 A166277 A145342 * A318936 A088750 A056018

Adjacent sequences:  A248915 A248916 A248917 * A248919 A248920 A248921

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Oct 16 2014

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 September 20 18:26 EDT 2018. Contains 315240 sequences. (Running on oeis4.)