580608

Appears in sequences

• A simple grammar: cycles of rooted cycles.at n=9A052804
• Denominators in expansion of (1-x)^(-1/x)/e.at n=6A055535
• Triangular array T(n,k) read by rows, giving number of labeled free trees such that the root is smaller than all its children, with respect to the number n of vertices and to the size k of the subtree rooted at the vertex labeled by 1.at n=40A071209
• Denominators of coefficients in a series for the inverse of harmonic number H(x).at n=3A118051
• Denominators of Blandin-Diaz compositional Bernoulli numbers (B^Z)_1,n.at n=7A132097
• Totally multiplicative sequence with a(p) = 6*(p+2) for prime p.at n=39A167307
• Bisection of A055535.at n=3A239898
• Denominators of fractions appearing in a generalization of Carleman's inequality.at n=6A249277
• Expansion of phi_{5, 4}(x) where phi_{r, s}(x) = Sum_{n, m>0} m^r * n^s * x^{m*n}.at n=12A280022
• Sum of the odd divisors of the primorial inflation of n.at n=16A337204
• Sum of the odd divisors of the primorial inflation of n.at n=33A337204
• T(n, k) = (n + 1)*2^(n + k)*hypergeom([-n, k - n + 1], [2], 1/2), triangle read by rows for 0 <= k <= n.at n=40A337617
• a(n) = (1/3)*A054640(n) for n >= 1.at n=6A374852
• Triangular array T(n, k) read by rows: denominators of the coefficients for the iterated exponential F^{r}(x) = x + Sum_{n>=1} x^(n+1)*Sum_{k=1..n} r^(n+1-k)*A381932(n, k)/T(n, k) with F^{1}(x) = exp(x)-1 and F^{2}(x) = exp(exp(x)-1)-1.at n=33A381931
• a(n) = Sum_{k=0..floor(n/3)} 2^k * 3^(n-3*k) * binomial(k,2*(n-3*k)).at n=29A390775
• a(n) = Sum_{k=0..floor(n/3)} (k+1) * 2^k * 3^(n-3*k) * binomial(k,3*(n-3*k)).at n=26A392043