359101domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes of the form p^2 + (p + 1)/2 where p is also prime.at n=22A164580G.f. satisfies A(x) = x + x*A(A(A(A(A(A(x)))))), so that this sequence shifts left under the 6th self-COMPOSE.at n=6A378576Prime numbersat n=30693