OFFSET
1,2
COMMENTS
Numbers n for which A257265(n) = 2.
LINKS
EXAMPLE
PROG
(Scheme, with Antti Karttunen's IntSeq-library)
(Haskell)
a257509 n = a257509_list !! (n-1)
a257509_list = filter ((== 2) . a257265) [0..]
-- Reinhard Zumkeller, May 06 2015
CROSSREFS
KEYWORD
nonn
AUTHOR
Antti Karttunen, May 03 2015
STATUS
approved