340200

Appears in sequences

• tanh(log(x+1)-arcsinh(x))=-1/2!*x^2+3/3!*x^3-6/4!*x^4+15/5!*x^5...at n=10A013277
• a(n) = polygorial(n,3)/polygorial(3,n), n >= 3.at n=5A085356
• Number of permutations on n points admitting a sixth root.at n=10A215717
• Integer areas of orthic triangles of integer-sided triangles.at n=22A230402
• Number T(n,k) of ordered partitions of an n-set with nondecreasing block sizes and maximal block size equal to k; triangle T(n,k), n>=0, 0<=k<=n, read by rows.at n=47A262071
• Number of ordered set partitions of [n] with nondecreasing block sizes and maximal block size equal to two.at n=7A272492
• Number of 2 X 2 matrices with entries in {0,1,...,n} and odd trace with no elements repeated.at n=29A279905
• Denominators of coefficients in asymptotic expansion of exp(2*(H_k-gamma))/k^2 in powers of 1/k, where H_k are the harmonic numbers A001008/A002805 and gamma is the Euler-Mascheroni constant A001620.at n=8A331778
• Expansion of e.g.f. 1/(1 + x/3 * log(1 - 3 * x)).at n=7A354316
• Triangle read by rows: T(n, k) is the denominator of the probability of winning a certain game while playing optimally.at n=56A370399
• A008336(n) is divisible by the product of the primes p such that n/2 <= p < n; a(n) is the quotient.at n=27A370971
• Triangle read by rows: T(n,k) is the number of ways to place 2*n rooks on a (n+k) X (2*n-k) board so that there is at least one rook in every column and row and so that each rook is defended by another.at n=16A382776
• Triangle read by rows: T(n,k) is the number of ways to place 2*n rooks on a (n+k) X (2*n-k) board so that there is at least one rook in every column and row and so that each rook is defended by another.at n=19A382776