93068domain: NAppears in sequencesa(n) = (2*n-1)*(5*n^2-5*n+2)/2.at n=26A063495Numbers k such that the k-th prime + k is a cube.at n=9A076147Numbers n such that prime(n) + n is a prime power (A246547).at n=23A109314Sum of the middle parts in the partitions of 4n-1 into 3 parts.at n=39A240707