263930domain: NAppears in sequencesNumbers n such that n+prime(n) is the square of a prime.at n=25A104911Numbers n such that prime(n) + n is a prime power (A246547).at n=34A109314Number of Grassmannian permutations of size n that avoid a pattern, sigma, where sigma is a pattern of size 9 with exactly one descent.at n=20A362196