Product representation of the Pell numbers A000129 and A002203.

Terms

a(0) =2a(1) =1a(2) =7a(3) =6a(4) =41a(5) =5a(6) =239a(7) =34a(8) =199a(9) =29a(10) =8119a(11) =33a(12) =47321a(13) =169a(14) =961a(15) =1154a(16) =1607521a(17) =197a(18) =9369319a(19) =1121a(20) =32641a(21) =5741a(22) =318281039a(23) =1153a(24) =45245801a(25) =33461a(26) =7761799a(27) =38081a(28) =63018038201a(29) =1345