1249937325

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