3838380
domain: N
Appears in sequences
- Denominator in Feinler's formula for unsigned Bernoulli number |B_{2n}|.at n=18A002444
- Denominators of Cauchy numbers of second type (= Bernoulli numbers B_n^{(n)}).at n=36A002790
- Binomial coefficient C(4n,n-4).at n=6A004334
- Binomial coefficient C(5n+10,n).at n=6A004344
- Denominators of Cauchy numbers of first type.at n=36A006233
- Binomial coefficient C(40,n).at n=6A010956
- Binomial coefficient C(n,34).at n=6A010987
- Number of compositions of n into 7 ordered relatively prime parts.at n=34A023032
- a(n) = binomial(n, floor(n/6)).at n=40A051053
- Binomial coefficients C(2*n+6,6).at n=17A053135
- Least common multiple of all (k+1)'s, where the k's are the positive divisors of n.at n=35A057643
- Number of orbits of length n in map whose periodic points come from A006954.at n=35A060479
- Number of orbits of length n in map whose periodic points come from A006954.at n=53A060479
- a(n) = Max { k>0 : denominator(S(k,2n+1)) } where S(k,s)=sum(i=1,k,i^s*H(i,2)) - H(k,2)*H(k,-s) and H(k,r)=sum(i=1,k,1/i^r) are the generalized harmonic numbers.at n=35A096442
- Number of subsets of {1,2,...,n} in which exactly half of the elements are less than or equal to sqrt(n).at n=40A102366
- a(n) = A051717(2n) + A051717(2n+1).at n=18A140812
- a(n) = A165641(n+1)/A165641(n).at n=35A165886
- Denominator of the rational number Sum_{d|n}1/(d+1).at n=35A263326
- a(n) = GCD({(2*n-k)*T(n,k)+(k+1)*T(n,k+1), k=0..n}), where T(n,k) stands for A214406 (the second-order Eulerian numbers of type B).at n=35A339100
- Number of subsets of [n] in which exactly half of the elements are powers of 2.at n=40A357812