OFFSET
1,2
LINKS
PROG
(Haskell)
import Data.List (elemIndex); import Data.Maybe (fromJust)
a115408 = (+ 1) . fromJust . (`elemIndex` a115409_list)
-- Reinhard Zumkeller, Sep 16 2014
CROSSREFS
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Jan 22 2006
STATUS
approved