2704193domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes of the form C(2*m, m) + prime(m), where C(2*m, m) = (2*m)!/(m!)^2.at n=4A236245a(1) = 2; for n > 1, a(n) is the least prime p not already in the sequence such that the Hamming distance between p and a(n-1) is 1.at n=27A294205Prime numbersat n=196919