Second partial sums of fourth powers (A000583).

Terms

a(0) =1a(1) =18a(2) =116a(3) =470a(4) =1449a(5) =3724a(6) =8400a(7) =17172a(8) =32505a(9) =57838a(10) =97812a(11) =158522a(12) =247793a(13) =375480a(14) =553792a(15) =797640a(16) =1125009a(17) =1557354a(18) =2120020a(19) =2842686a(20) =3759833a(21) =4911236a(22) =6342480a(23) =8105500a(24) =10259145a(25) =12869766a(26) =16011828a(27) =19768546a(28) =24232545a(29) =29506544