80313433200
domain: N
Appears in sequences
- a(n) = denominator of harmonic number H(n) = Sum_{i=1..n} 1/i.at n=27A002805
- a(n) = denominator of harmonic number H(n) = Sum_{i=1..n} 1/i.at n=26A002805
- a(n) = LCM(1,2,...,n) / n.at n=28A002944
- Least common multiple (or LCM) of {1, 2, ..., n} for n >= 1, a(0) = 1.at n=27A003418
- Least common multiple (or LCM) of {1, 2, ..., n} for n >= 1, a(0) = 1.at n=28A003418
- a(n) = LCM{1, C(n-1,1), C(n-2,2), ..., C(n-[ n/2 ],[ n/2 ])}.at n=28A025560
- Denominator of n * n-th harmonic number.at n=28A027611
- Least common multiple of integers less than and prime to n.at n=28A038610
- a(n) = lcm{ 1,2,...,x } where x is the n-th prime power (A000961).at n=15A051451
- Distinct values of sequence obtained when LCM is applied to initial segments of sequence A024619 union {1}.at n=14A056836
- Denominator of the n-th alternating harmonic number, Sum_{k=1..n} (-1)^(k+1)/k.at n=26A058312
- a(n) is the largest integer m such that m is divisible by every integer in the interval 1 <= x <= m^(1/n).at n=7A060942
- Denominator of Sum_{k=1..n} d(k)/k, where d() = A000005().at n=27A065080
- Denominator of Sum_{k=1..n} d(k)/k, where d() = A000005().at n=26A065080
- a(n) is the least common multiple of numbers in {1,2,3,...,n-1} which do not divide n.at n=27A067391
- a(n) is the least common multiple of numbers in {1,2,3,...,n-1} which do not divide n.at n=28A067391
- Denominator of Sum_{1<=k<=n, gcd(k,n)=1} 1/k.at n=28A069220
- a(n) = lcm(1..n) / ((n+1)(n+2)...(n+k)) where k is the largest number which gives an integral value.at n=27A069491
- Consider Pascal's triangle A007318; a(n) = LCM of terms at +45 degree slope with the horizontal.at n=29A073618
- Denominators of Sum_{k=1..n} 1/lcm(n,k).at n=26A074949