OFFSET
1,3
COMMENTS
See also comments in A336641, where all such k should reside. - Antti Karttunen, Jul 29 2020
LINKS
Antti Karttunen, Table of n, a(n) for n = 1..20000
FORMULA
a(n) = n - A336645(n). - Antti Karttunen, Jul 29 2020
PROG
CROSSREFS
KEYWORD
nonn
AUTHOR
Antti Karttunen, Jun 09 2019
STATUS
approved