OFFSET
1,1
COMMENTS
Odd nonludic numbers (A266419) decremented by one, then halved.
LINKS
Antti Karttunen, Table of n, a(n) for n = 1..10220
FORMULA
a(n) = (A266419(n) - 1) / 2.
PROG
(Scheme, with Antti Karttunen's IntSeq-library)
CROSSREFS
KEYWORD
nonn
AUTHOR
Antti Karttunen, Jan 28 2016
STATUS
approved