Beach-Williams Pell numbers of type pq (p,q primes).

Terms

a(0) =5305a(1) =5713a(2) =6757a(3) =6953a(4) =8005a(5) =9305a(6) =9953a(7) =10961a(8) =11629a(9) =12181a(10) =12961a(11) =13105a(12) =14305a(13) =15529a(14) =16601a(15) =17305a(16) =20005a(17) =24901a(18) =26305a(19) =26277