Primitive parts of Pell numbers.

Terms

a(0) =1a(1) =2a(2) =5a(3) =6a(4) =29a(5) =7a(6) =169a(7) =34a(8) =197a(9) =41a(10) =5741a(11) =33a(12) =33461a(13) =239a(14) =1345a(15) =1154a(16) =1136689a(17) =199a(18) =6625109a(19) =1121a(20) =45697a(21) =8119a(22) =225058681a(23) =1153a(24) =45232349a(25) =47321a(26) =7761797a(27) =38081a(28) =44560482149a(29) =961