OFFSET
1,2
COMMENTS
a(n) = number of terms of A269389 <= n.
LINKS
Antti Karttunen, Table of n, a(n) for n = 1..10000
PROG
(Scheme, with Antti Karttunen's IntSeq-library)
CROSSREFS
KEYWORD
nonn
AUTHOR
Antti Karttunen, Mar 16 2016
STATUS
approved