a(n) = 1 + n^2 + n^3 + n^5.

Terms

a(0) =4a(1) =45a(2) =280a(3) =1105a(4) =3276a(5) =8029a(6) =17200a(7) =33345a(8) =59860a(9) =101101a(10) =162504a(11) =250705a(12) =373660a(13) =540765a(14) =762976a(15) =1052929a(16) =1425060a(17) =1895725a(18) =2483320a(19) =3208401a(20) =4093804a(21) =5164765a(22) =6449040a(23) =7977025a(24) =9781876a(25) =11899629a(26) =14369320a(27) =17233105a(28) =20536380a(29) =24327901