OFFSET
1,1
LINKS
Reinhard Zumkeller and Ray Chandler, Table of n, a(n) for n = 1..10000 (first 1000 terms from Reinhard Zumkeller)
FORMULA
PROG
(Haskell)
a256561 = (+ 1) . fromJust . (`elemIndex` a166133_list) . a000040
CROSSREFS
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Apr 02 2015
STATUS
approved