232699domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(1) = 2, a(2) = 3; for n > 0, a(n+2) is the smallest prime chosen so that (a(n+2) - a(n+1))/(a(n+1) - a(n)) is an integer.at n=23A084736Prime numbersat n=20652