OFFSET
1,2
COMMENTS
If A121217 is a permutation, as conjectured, then this is the inverse permutation.
LINKS
Reinhard Zumkeller, Table of n, a(n) for n = 1..10000
PROG
(Haskell)
import Data.List (elemIndex); import Data.Maybe (fromJust)
a256618 = (+ 1) . fromJust . (`elemIndex` a121217_list)
CROSSREFS
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Apr 05 2015
STATUS
approved