11285084160domain: NAppears in sequencesNumber of permutations in the symmetric group S_n such that the size of their centralizer is odd.at n=14A088994The number of n-permutations having precisely two cycles whose lengths are relatively prime.at n=12A194364a(n) = n! * [x^n] Product_{k=1..n, gcd(n,k) = 1} (1 + x^k/k).at n=14A338439