360360

Appears in sequences

• a(n) = (2n+3)! /( n! * (n+1)! ).at n=6A000911
• a(0)=12; thereafter a(n) = 12 times the product of the first n primes.at n=6A001041
• Harmonic or Ore numbers: numbers k such that the harmonic mean of the divisors of k is an integer.at n=25A001599
• Numbers N in A002809 such that there is rho > 0 such that for all A > 0, A008475(A)-A008475(N) >= rho*log(A/N).at n=7A002497
• Denominators of coefficients for numerical differentiation.at n=15A002548
• a(n) = denominator of harmonic number H(n) = Sum_{i=1..n} 1/i.at n=13A002805
• a(n) = denominator of harmonic number H(n) = Sum_{i=1..n} 1/i.at n=12A002805
• a(n) = denominator of harmonic number H(n) = Sum_{i=1..n} 1/i.at n=14A002805
• Increasing values of A000793 (largest order of permutation of n elements).at n=31A002809
• Least common multiple (or LCM) of {1, 2, ..., n} for n >= 1, a(0) = 1.at n=13A003418
• Least common multiple (or LCM) of {1, 2, ..., n} for n >= 1, a(0) = 1.at n=15A003418
• Least common multiple (or LCM) of {1, 2, ..., n} for n >= 1, a(0) = 1.at n=14A003418
• Maximal period of an n-stage shift register.at n=22A005417
• Maximal period of an n-stage shift register.at n=21A005417
• Numbers whose divisors' harmonic and arithmetic means are both integers.at n=22A007340
• Triangle of coefficients of Legendre polynomials 2^n P_n (x).at n=32A008556
• Numbers k such that sigma(k)/phi(k) sets a new record.at n=27A018894
• Least common multiple of {C(0,0), C(2,1), ..., C(2n,n)}.at n=8A025540
• Least common multiple of {C(0,0), C(2,1), ..., C(2n,n)}.at n=7A025540
• LCM of {C(0,0), C(1,0), ..., C(n, floor(n/2))}.at n=14A025552