896896
domain: N
Appears in sequences
- n-phi-torial, or phi-torial of n: Product k, 1 <= k <= n, k relatively prime to n.at n=14A001783
- a(n) = a(n-1) + 8*a(n-2) - 3*a(n-3) - 17*a(n-4) + a(n-5) + 13*a(n-6) + 4*a(n-7) - 6*a(n-8) - a(n-9).at n=16A173659
- Denominator of Product_{k=1..n} (2k/(2k+1))^((-1)^A000120(k)).at n=7A261559
- Partial products of odious numbers.at n=8A308501