Fifth partial sums of cubes (A000578).

Terms

a(0) =1a(1) =13a(2) =82a(3) =354a(4) =1200a(5) =3432a(6) =8646a(7) =19734a(8) =41613a(9) =82225a(10) =153868a(11) =274924a(12) =472056a(13) =782952a(14) =1259700a(15) =1972884a(16) =3016497a(17) =4513773a(18) =6624046a(19) =9550750a(20) =13550680a(21) =18944640a(22) =26129610a(23) =35592570a(24) =47926125a(25) =63846081a(26) =84211128a(27) =110044792a(28) =142559824a(29) =183185200