The OEIS is supported by the many generous donors to the OEIS Foundation.



Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 59th year, we have over 358,000 sequences, and we’ve crossed 10,300 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A117922 Inverse of A055265, assuming it is a permutation, as conjectured. 4


%S 1,2,3,4,7,6,5,8,9,10,17,16,11,14,13,12,15,18,19,22,21,20,23,24,29,32,

%T 31,28,25,26,27,36,33,30,35,40,41,34,37,38,43,42,39,48,47,54,51,44,45,

%U 50,55,46,49,52,53,56,57,64,69,72,59,62,67,66,61,60,71,68,63,58,73,70

%N Inverse of A055265, assuming it is a permutation, as conjectured.

%H T. D. Noe, <a href="/A117922/b117922.txt">Table of n, a(n) for n = 1..1000</a>

%H <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a>

%o (Haskell)

%o import Data.List (elemIndex)

%o import Data.Maybe (fromJust)

%o a117922 = (+ 1) . fromJust . (`elemIndex` a055265_list)

%o -- _Reinhard Zumkeller_, Feb 14 2013

%Y A117924(n) = a(a(n)); A117925 lists fixed points.

%K nonn

%O 1,2

%A _Reinhard Zumkeller_, Apr 03 2006

%E Edited by _M. F. Hasler_, Dec 14 2015

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified November 27 19:48 EST 2022. Contains 358406 sequences. (Running on oeis4.)