Beach-Williams Pell numbers of type 2pqr (p,q,r primes).

Terms

a(0) =6850a(1) =13858a(2) =22850a(3) =47650a(4) =51610a(5) =55042a(6) =58378a(7) =72610a(8) =75010a(9) =79186a(10) =86330a(11) =99650a(12) =106850a(13) =107650a(14) =114850a(15) =124066a(16) =127010a(17) =138170a(18) =138850a(19) =144730