3234846615

Appears in sequences

• Denominators of partial sums of Bernoulli numbers B_{2n} = A000367/A002445.at n=14A035077
• Numbers that are the product of 9 successive primes.at n=1A046327
• Denominators of partial sums of reciprocals of primorial numbers.at n=9A064647
• One half of product of first n primes A000040.at n=9A070826
• Denominator of Sum_{k=1..n} mu(k)/k.at n=28A070889
• a(n) is the smallest positive integer m for which A070194(m) (i.e., the maximal gap in {k|gcd(k,m) = 1, 1 <= k <= m-1}) is n.at n=22A070971
• Denominator of Sum_{k=1..n} phi(k)/k.at n=28A072155
• Denominator of Sum_{k=1..n} phi(k)/k.at n=29A072155
• For the n-th squarefree number: the product of all primes greater than its smallest factor and less than its largest factor and not dividing it.at n=38A073483
• Smallest s for which there are exactly n primitive Pythagorean triangles with perimeter 2s; i.e., smallest s such that A078926(s) = n.at n=16A078927
• Denominator of Sum(k^mu(k): 1<=k<=n), where mu is the Moebius function (A008683).at n=29A080326
• a(n) is the denominator of Sum_{i=1..n} i!/(i^2).at n=29A121566
• a(n) is the denominator of Sum_{i=1..n} i!/(i^2).at n=30A121566
• Least k such that the Jacobsthal function A048669(k) = n.at n=22A128759
• a(n) is the smallest odd composite number m such that m+2 is prime and the set of distinct prime factors of m consists of the first n odd primes.at n=8A136354
• Increasing sequence obtained by union of two sequences A136354 and {b(n)}, where b(n) is the smallest composite number m such that m+1 is prime and the set of distinct prime factors of m consists of the first n primes.at n=17A136357
• Smallest positive m such that m*n is free of prime gaps in canonical factorization.at n=61A137795
• Denominator of the fraction c(n) defined in A172030.at n=30A172031
• The product of primes <= n that are strongly prime to n.at n=32A181836
• Denominators of a companion to the Bernoulli numbers.at n=29A192366