a(n) = n^3 + 6*n^2 + 6*n + 1.

Terms

a(0) =1a(1) =14a(2) =45a(3) =100a(4) =185a(5) =306a(6) =469a(7) =680a(8) =945a(9) =1270a(10) =1661a(11) =2124a(12) =2665a(13) =3290a(14) =4005a(15) =4816a(16) =5729a(17) =6750a(18) =7885a(19) =9140a(20) =10521a(21) =12034a(22) =13685a(23) =15480a(24) =17425a(25) =19526a(26) =21789a(27) =24220a(28) =26825a(29) =29610