a(n) = n*(3*n + 10).

Terms

a(0) =0a(1) =13a(2) =32a(3) =57a(4) =88a(5) =125a(6) =168a(7) =217a(8) =272a(9) =333a(10) =400a(11) =473a(12) =552a(13) =637a(14) =728a(15) =825a(16) =928a(17) =1037a(18) =1152a(19) =1273a(20) =1400a(21) =1533a(22) =1672a(23) =1817a(24) =1968a(25) =2125a(26) =2288a(27) =2457a(28) =2632a(29) =2813