365904

Appears in sequences

• Sum of all matrix elements M(i,j) = n!*(i/j), (i,j = 1..n).at n=6A098107
• Binomial(n-k,k) * binomial(n-k-1,k+1) where k = ceiling(n/4).at n=16A171002
• Triangle read by rows, defined by T(n,k)=binomial(n,k)*|Stirling1(n,k)|, 0<=k<=n.at n=38A187555
• Number of ways to arrange 5 indistinguishable points on an n X n X n triangular grid so that no four points are in the same row or diagonal.at n=7A194482
• Triangle read by rows: coefficients of harmonic-geometric polynomials.at n=34A222057
• Triangle read by rows: coefficients of harmonic-geometric polynomials.at n=43A222060
• Triangle read by rows: T(n,k) = logarithmic polynomial A_k^(n)(x) evaluated at x=-1.at n=49A260325
• Least integer k such that the set of the divisors of k contains exactly n pairs of numbers having the following property: for each pair of two distinct divisors, the reversal of one is equal to the other.at n=12A260705
• Expansion of e.g.f. exp(x^4 * exp(x)).at n=9A292979
• Triangle T(n,m) = C(2*n,m)*C(2*n-1,n), 0 <= m <= 2*n, n >= 0.at n=41A320327
• Triangle T(n,m) = C(2*n,m)*C(2*n-1,n), 0 <= m <= 2*n, n >= 0.at n=43A320327
• a(n) is the number of subsets of {1..n} that contain 5 even and 5 odd numbers.at n=23A331576
• Triangle read by rows: T(n,k) = number of vertices of degree k in an origami flip graph OFG(A2n).at n=49A352880