a(n) = (12*n + 2)^5.

Terms

a(0) =32a(1) =537824a(2) =11881376a(3) =79235168a(4) =312500000a(5) =916132832a(6) =2219006624a(7) =4704270176a(8) =9039207968a(9) =16105100000a(10) =27027081632a(11) =43204003424a(12) =66338290976a(13) =98465804768a(14) =141985700000a(15) =199690286432a(16) =274794888224a(17) =370967703776a(18) =492359665568a(19) =643634300000a(20) =829997587232