1249937325
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=21A001783
- a(n) = product of those positive integers which are coprime to both n and n+1 and which are <= n.at n=21A124740
- Row sums of triangle A128592.at n=10A128595
- Numerators of rationals r(n) related to the z-sequence of the Sheffer matrix A060821 for Hermite polynomials.at n=10A130187
- Terms of A001783 which are smaller than the preceding term in that sequence.at n=8A193340
- Product of positive odd integers smaller than n and relatively prime to n.at n=21A209388