OFFSET
1,2
COMMENTS
EXAMPLE
a(6)=4 since n=6 gives m=4, k=0 and so binomial(4,2^0)=4.
a(20)=70 since n=20 gives m=8, k=2 and so binomial(8,2^2)=70.
CROSSREFS
KEYWORD
nonn
AUTHOR
Hieronymus Fischer, May 05 2007, Sep 10 2007
STATUS
approved