6350400
domain: N
Appears in sequences
- Denominator of 2^n*(3*n-3)!/( ((n-1)!)^3 * (2*n)! ).at n=8A004824
- a(n) = denominator of Sum_{k=1..n} 1/k^2.at n=8A007407
- First diagonal of A027447.at n=10A027451
- Sets record for f(n) = |{(a,b):a*b=n and a|b}|. Also squares of highly composite numbers A002182.at n=17A046952
- Square of LCM of {1, 2, ..., n}.at n=9A051418
- Square of LCM of {1, 2, ..., n}.at n=8A051418
- Numbers which can be expressed as product of a number and its reversal in at least three different ways.at n=5A066590
- Denominator(Sum_{i=1..n} 1/i^3)/denominator(Sum_{i=1..n} 1/i).at n=8A068589
- Denominator(Sum_{i=1..n} 1/i^3)/denominator(Sum_{i=1..n} 1/i).at n=9A068589
- Denominator(sum(i=1,n,1/i^4))/denominator(sum(i=1,n,1/i^2)).at n=8A069046
- Denominator(sum(i=1,n,1/i^5))/denominator(sum(i=1,n,1/i^3)).at n=8A069053
- Denominator(sum(i=1,n,1/i^5))/denominator(sum(i=1,n,1/i^3)).at n=9A069053
- Product of entries in n-th row of triangle in A081454.at n=9A081456
- Even squares which can be expressed as the product of a number and its reversal in at least two different ways.at n=2A083406
- Squares which can be expressed as the product of a number and its reversal in at least two different ways.at n=2A083408
- Denominators of squares of harmonic numbers A001008/A002805.at n=9A103931
- Denominators of squares of harmonic numbers A001008/A002805.at n=8A103931
- Least number k which can be written as k^2 * j, 0 < j <= k in n ways.at n=11A104024
- Denominators of row sums of rational triangle A120072/A120073.at n=7A120077
- Coefficient triangle of numerator polynomials appearing in certain column o.g.f.s related to the H-atom spectrum.at n=36A120078