10192158720
domain: N
Appears in sequences
- a(n) = Product_{k=1..n} d(k); d(k) = A000005(k) is the number of positive divisors of k.at n=21A066843
- Hankel transform of ordered Bell numbers A000670. a(n)=det(A000670(i+j-1)), i,j=1,2..n.at n=4A159783
- a(n) = Product_{k=1..n} d(2*k), where d() is the number of divisors function A000005.at n=14A334767