OFFSET
0,2
COMMENTS
In A082905, all binomial coefficients C(n,j) are replaced by C(n/g, j/g), where g=gcd(n,j); a(n) = Sum_{j=0..n-1} C(n/g, j/g).
EXAMPLE
a(0)=1; a(12) = 1 + 12 + 6 + 4 + 3 + 792 + 2 + 792 + 3 + 4 + 6 + 12 + 1 = 1638.
MATHEMATICA
Table[Apply[Plus, Table[Binomial[n/GCD[n, j], j/GCD[n, j]], {j, 0, n}]], {n, 0, 32}]
CROSSREFS
KEYWORD
nonn
AUTHOR
Labos Elemer, Apr 23 2003
STATUS
approved