Volume of right circular cone (rounded down) with the diameter of base and height equal to n.

Terms

a(0) =0a(1) =2a(2) =7a(3) =16a(4) =32a(5) =56a(6) =89a(7) =134a(8) =190a(9) =261a(10) =348a(11) =452a(12) =575a(13) =718a(14) =883a(15) =1072a(16) =1286a(17) =1526a(18) =1795a(19) =2094a(20) =2424a(21) =2787a(22) =3185a(23) =3619a(24) =4090a(25) =4601a(26) =5152a(27) =5747a(28) =6385a(29) =7068