37182145

Appears in sequences

• n-phi-torial, or phi-torial of n: Product k, 1 <= k <= n, k relatively prime to n.at n=23A001783
• Coefficients of Legendre polynomials.at n=9A001802
• Denominators of poly-Bernoulli numbers B_n^(k) with k=2.at n=26A027644
• Denominators of partial sums of Bernoulli numbers B_{2n} = A000367/A002445.at n=12A035077
• Least common multiple of integers less than and prime to n.at n=23A038610
• Product of 7 successive primes.at n=2A046325
• Squarefree part of lcm(1,...,n).at n=23A056839
• Squarefree part of lcm(1,...,n).at n=24A056839
• Product of primes < n that do not divide n.at n=23A066838
• Denominator of Sum_{1<=k<=n, gcd(k,n)=1} 1/k.at n=23A069220
• Denominator of Sum_{k=1..n} phi(k)/k.at n=23A072155
• Denominator of Sum_{k=1..n} phi(k)/k.at n=25A072155
• Denominator of Sum_{k=1..n} phi(k)/k.at n=24A072155
• Denominator of b(n) = Sum_{k'<=n} 1/k', where k' denotes the squarefree numbers.at n=26A072983
• Denominator of b(n) = Sum_{k'<=n} 1/k', where k' denotes the squarefree numbers.at n=27A072983
• Denominator of b(n) = Sum_{k'<=n} 1/k', where k' denotes the squarefree numbers.at n=25A072983
• Product of primes greater than the greatest prime factor of n but not greater than n.at n=23A083722
• Product of primes greater than the greatest prime factor of n but not greater than n.at n=26A083722
• Smallest number of the form n*k + 1 that is divisible by all the phi(n) numbers less than n and relatively prime to n.at n=22A084715
• a(1) = 1; for n>1, a(n) = a(n-1)*n if n is prime, a(n) = a(n-1)/n if n is composite dividing a(n-1) else a(n) = a(n-1).at n=22A085087