305861domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumber of noncongruent integer-sided tetrahedra with largest side n.at n=25A097125G.f. A(x) satisfies A(A(A(x))) = B(x) (3rd self-COMPOSE of A) such that the coefficients of B(x) consist only of numbers {1,2,3}, with B(0) = 0.at n=12A112107Prime numbersat n=26481