281252domain: NAppears in sequencesSides of integer Heronian triangles [prime(A068964(n)), prime(A068964(n)+1), a(n)] with area A068966(n).at n=19A068965Even side of integer-sided triangle such that the area is an integer and two sides are twin primes.at n=11A257547Dirichlet g.f.: Product_{k>=2} (1 + k^(-s))^(6^(k-1)).at n=7A344269