OFFSET
0,5
COMMENTS
a(0) = 0; and for n >= 1: a(n) = the largest number k such that A257803(k) <= n.
LINKS
Antti Karttunen, Table of n, a(n) for n = 0..16405
FORMULA
PROG
CROSSREFS
KEYWORD
nonn
AUTHOR
Antti Karttunen, May 12 2015
STATUS
approved