732761domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumerators of the determinant of matrix (M(n) - H(n)), where H(n) is the n-th Hilbert matrix and M(n) is an n X n matrix with i,j-th entry i+j-1.at n=27A061913Primes p such that p + prime(p) is a square.at n=21A242625Prime numbersat n=58988