1338557220

Appears in sequences

• Denominator of (1/n)*Sum_{k=0..n-1} 1/binomial(n-1,k) for n>0 else 1.at n=23A046879
• Denominators of partial sums of reciprocals of lcm(1..n) = A003418(n).at n=22A064858
• n-th roots of the n-th powers pertaining to A082236.at n=19A082237
• n-th roots of the n-th powers pertaining to A082236.at n=20A082237
• n-th roots of the n-th powers pertaining to A082236.at n=21A082237
• n-th roots of the n-th powers pertaining to A082236.at n=22A082237
• n-th roots of the n-th powers pertaining to A082236.at n=23A082237
• n-th roots of the n-th powers pertaining to A082236.at n=24A082237
• a(n) = C(n+5,5)*C(n+10,5).at n=16A104679
• a(n) = (6*n)!/((3*n)!*(2*n)!*n!).at n=4A113424
• Denominators of the difference between the squarefree totient analogs of the harmonic numbers and the harmonic numbers: F_n - H_n.at n=22A138321
• Denominator of the polynomial A_l(x) = Sum_{d=1..l-1} x^(l-d)/d for index l=2n+1 evaluated at x=2.at n=11A145612
• a(n) = n!*(floor(n/30))!/((floor(n/2))!*(floor(n/3))!*(floor(n/5))!).at n=24A211418
• With a(1) = 1, a(n) is the LCM of all 0 < m < n for which a(m) divides n.at n=23A271504
• Least number with the prime signature of the n-th Catalan number.at n=23A278258
• Least number with the prime signature of the n-th Catalan number.at n=24A278258
• Cubefree superabundant numbers: cubefree numbers (A004709) k such that sigma(k)/k > sigma(j)/j for all cubefree numbers j < k.at n=21A308618
• Irregular triangle read by rows in which the n-th row lists multinomials for partitions of 4n which have only parts which are multiples of 4, in Hindenburg order.at n=24A327004
• Numbers k where the average number of distinct prime factors of the divisors of k sets a new record.at n=37A346016
• a(n) = n!/(floor(n/2)!*floor(n/3)!*floor(n/6)!).at n=24A347304