410640domain: NAppears in sequencesarctan(sin(arcsinh(x)))=x-4/3!*x^3+84/5!*x^5-4320/7!*x^7+410640/9!*x^9...at n=4A012037Molecular topological indices of the cocktail party graphs.at n=29A181773a(n) is the number of 2 X 2 matrices over Z_p with determinant in {1,-1} where p = prime(n).at n=16A262354