OFFSET
2,1
COMMENTS
LINKS
Reinhard Zumkeller, Table of n, a(n) for n = 2..100
PROG
(Haskell)
a261525 = (+ 1) . fromJust . (`elemIndex` a031131_list) . (* 2)
CROSSREFS
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Aug 23 2015
STATUS
approved