Sum of divisors of 2^n + 3^n.

Terms

a(0) =6a(1) =14a(2) =48a(3) =98a(4) =372a(5) =868a(6) =2784a(7) =7236a(8) =27744a(9) =64708a(10) =215040a(11) =541156a(12) =1947840a(13) =5168548a(14) =23046144a(15) =43129476a(16) =155189760a(17) =444228512a(18) =1398675600a(19) =3623742864a(20) =14636428992a(21) =33799504228a(22) =113272236000a(23) =299806597512