OFFSET
0,2
COMMENTS
Indexing starts from zero, because a(0)=0 is a special case in this sequence.
Equally: positions of odd terms in A275726.
LINKS
PROG
(Scheme, with Antti Karttunen's IntSeq-library)
CROSSREFS
KEYWORD
nonn
AUTHOR
Antti Karttunen, Aug 11 2016
STATUS
approved