Sum of the divisors of A000129(n) (Pell numbers).

Terms

a(0) =1a(1) =3a(2) =6a(3) =28a(4) =30a(5) =144a(6) =183a(7) =1080a(8) =1188a(9) =3780a(10) =5742a(11) =52416a(12) =33462a(13) =131760a(14) =251100a(15) =1290096a(16) =1145124a(17) =5702400a(18) =6804204a(19) =42336000a(20) =50176404a(21) =146352096a(22) =226041700a(23) =2333111040a(24) =1357893000a(25) =4818528000a(26) =9395060400a(27) =47385112320a(28) =44560482150a(29) =251337038400