29099070

Appears in sequences

• Areas of more than one primitive Pythagorean triangle.at n=27A024407
• Denominator of (1/n)*Sum_{k=0..n-1} 1/binomial(n-1,k) for n>0 else 1.at n=22A046879
• Number of (2,2; n,n)-partitions of a chain of length n^2 + n.at n=8A055660
• Numbers k which, for some r, are r-digit maximizers of k/phi(k).at n=18A065800
• a(n) is the lcm of related numbers to n (counted in A073757): related = {divisor-set, RRS}.at n=21A083268
• Denominator of 2*Sum(C(n,w)/w,w=1..n/2-1)+C(n, n/2)/(n/2) if n is even otherwise of 2*Sum(C(n,w)/w,w=1..(n-1)/2).at n=38A085572
• Denominator of 2*Sum(C(n,w)/w,w=1..n/2-1)+C(n, n/2)/(n/2) if n is even otherwise of 2*Sum(C(n,w)/w,w=1..(n-1)/2).at n=39A085572
• Denominator of 2*Sum(C(n,w)/w,w=1..n/2-1)+C(n, n/2)/(n/2) if n is even otherwise of 2*Sum(C(n,w)/w,w=1..(n-1)/2).at n=40A085572
• Denominator of 2*Sum(C(n,w)/w,w=1..n/2-1)+C(n, n/2)/(n/2) if n is even otherwise of 2*Sum(C(n,w)/w,w=1..(n-1)/2).at n=41A085572
• Least common multiple of all cycle sizes in range [A014137(n-1)..A014138(n-1)] of permutation A089865/A089866.at n=11A089845
• Least common multiple of all cycle sizes in range [A014137(n-1)..A014138(n-1)] of permutation A089865/A089866.at n=12A089845
• Denominator of b(n), where Sum_{k>=1} b(k)/k^r = 1/(Sum_{k>=1} H(k)/k^r). H(k) = Sum_{j=1..k} 1/j, the k-th harmonic number.at n=19A097504
• Denominators of the difference between the squarefree totient analogs of the harmonic numbers and the harmonic numbers: F_n - H_n.at n=19A138321
• 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=9A145612
• Numbers with exactly 8 distinct prime divisors {2,3,5,7,11,13,17,19}.at n=2A147575
• Indices of Bernoulli numbers of the form 4k+2 whose fractional part is < 2/3.at n=14A155125
• Degrees of irreducible representations of twisted simple Chevalley group 2E6(2).at n=15A214478
• With a(1) = 1, a(n) is the LCM of all 0 < m < n for which a(m) divides n.at n=19A271504
• With a(1) = 1, a(n) is the LCM of all 0 < m < n for which a(m) divides n.at n=21A271504
• Even terms in A260442 (in A260443).at n=33A277200