OFFSET
0,3
LINKS
Max Alekseyev, Table of n, a(n) for n = 0..100
Putnam Exam. 1999, Question A6, Amer. Math. Monthly 107 (Oct 2000), 721-732; see p. 725.
CROSSREFS
KEYWORD
nonn
AUTHOR
Max Alekseyev, Jun 08 2015
STATUS
approved