OFFSET
0,2
EXAMPLE
n=11: the 12 relevant C(11,5)/C(k,floor(k/2)) quotients are {462,462,231,154,77,231/5,231/10,66/5,33/5,11/3,11/6,1}; of which a(12)=6 are integers.
MATHEMATICA
Table[Count[Table[IntegerQ[Binomial[n, Floor[n/2]]/ Binomial[i, Floor[i/2]]], {i, 0, n}], True], {n, 1, 256}]
CROSSREFS
KEYWORD
nonn
AUTHOR
Labos Elemer, Mar 13 2003
STATUS
approved