OFFSET
1,3
EXAMPLE
a(2)=1 since 4 = 2+2;
a(3)=2 since 6 = 3+3 = 2+2+2;
a(4)=3 since 8 = 3+5 = 2+3+3 = 2+2+2+2.
CROSSREFS
KEYWORD
nonn
AUTHOR
Giovanni Teofilatto, Feb 14 2005
EXTENSIONS
Edited, corrected and extended by Ray Chandler Feb 27 2005
More terms from Giovanni Teofilatto, Feb 14 2005
STATUS
approved