Partial sums of floor(n^3/3).

Terms

a(0) =0a(1) =0a(2) =2a(3) =11a(4) =32a(5) =73a(6) =145a(7) =259a(8) =429a(9) =672a(10) =1005a(11) =1448a(12) =2024a(13) =2756a(14) =3670a(15) =4795a(16) =6160a(17) =7797a(18) =9741a(19) =12027a(20) =14693a(21) =17780a(22) =21329a(23) =25384a(24) =29992a(25) =35200a(26) =41058a(27) =47619a(28) =54936a(29) =63065