a(n) = n^4*sigma_4(n).

Terms

a(0) =0a(1) =1a(2) =272a(3) =6642a(4) =69888a(5) =391250a(6) =1806624a(7) =5767202a(8) =17895424a(9) =43584723a(10) =106420000a(11) =214373522a(12) =464196096a(13) =815759282a(14) =1568678944a(15) =2598682500a(16) =4581294080a(17) =6975840962a(18) =11855044656a(19) =16983693362a(20) =27343680000a(21) =38305755684a(22) =58309597984a(23) =78311265122a(24) =118861406208a(25) =152832421875