a(n) = floor(47*(n-3/2)^(3/2)).

Terms

a(0) =16a(1) =86a(2) =185a(3) =307a(4) =448a(5) =606a(6) =778a(7) =965a(8) =1164a(9) =1376a(10) =1599a(11) =1832a(12) =2077a(13) =2331a(14) =2595a(15) =2868a(16) =3150a(17) =3440a(18) =3739a(19) =4047a(20) =4362a(21) =4685a(22) =5016a(23) =5354a(24) =5699a(25) =6052a(26) =6411a(27) =6777a(28) =7150a(29) =7530