OFFSET
0,4
LINKS
Alois P. Heinz, Table of n, a(n) for n = 0..20000
EXAMPLE
a(10) = 6 because 10 can be represented in 6 possible ways as a sum of integers in the set {1,2,3,4,5,7,8,11,13,...}: 8+2, 7+3, 7+2+1, 5+4+1, 5+3+2, 4+3+2+1.
CROSSREFS
KEYWORD
nonn
AUTHOR
Casey Mongoven, May 03 2014
EXTENSIONS
a(0)=1 from Alois P. Heinz, Sep 16 2015
STATUS
approved