60672

Appears in sequences

• arcsin(arctan(sin(x)))=x-2/3!*x^3+24/5!*x^5-888/7!*x^7+60672/9!*x^9...at n=4A012186
• Triangle read by rows: T(n,k) is the number of permutations of {1,2,...,n} in which the last entry of the first increasing run is equal to k (1 <= k <= n).at n=42A134433
• Smallest k such that p^p -+ k is prime, where p=prime(n).at n=17A157719
• Poly-Cauchy numbers c_n^(-3).at n=9A222636
• Let k = A228058(n). a(n) is the number of ways to partition the divisors of k into complementary subsets x and y so that the (k-Sum(x)) and (k-Sum(y)) are coprime.at n=64A325809
• The number of edges on an octagon formed by the straight line segments mutually connecting all vertices and all points that divide the sides into n equal parts.at n=3A333110
• Table read by antidiagonals: Place k equally spaced points on each side of a regular n-gon and join every pair of the n*(k+1) boundary points by a chord; T(n,k) (n >= 3, k >= 0) gives the number of edges in the resulting planar graph.at n=41A367324
• a(n) = Sum_{k=0..floor(n/3)} (k+1) * 2^k * 3^(n-3*k) * binomial(2*k,2*(n-3*k)).at n=15A390781