OFFSET
1,3
EXAMPLE
a(10) = a([10/2])+a([10/3])+a([10/5])+a([10/7]) =
a(5)+a(3)+a(2)+a(1) = (a([5/2])+a([5/3])+a([5/5])) + (a([3/2])+a([3/3])) +
a([2/2]) + a(1) = (a(2)+a(1)+a(1)) + (a(1)+a(1)) + a(1) + a(1) = a([2/2]) +
6*a(1) = a(1) + 6*1 = 7.
CROSSREFS
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Jan 02 2004
STATUS
approved