a(n) = 2*n^4.

Terms

a(0) =0a(1) =2a(2) =32a(3) =162a(4) =512a(5) =1250a(6) =2592a(7) =4802a(8) =8192a(9) =13122a(10) =20000a(11) =29282a(12) =41472a(13) =57122a(14) =76832a(15) =101250a(16) =131072a(17) =167042a(18) =209952a(19) =260642a(20) =320000a(21) =388962a(22) =468512a(23) =559682a(24) =663552a(25) =781250a(26) =913952a(27) =1062882a(28) =1229312a(29) =1414562