a(0) = 1, a(n) = 27*n^2 + 2 for n>0.

Terms

a(0) =1a(1) =29a(2) =110a(3) =245a(4) =434a(5) =677a(6) =974a(7) =1325a(8) =1730a(9) =2189a(10) =2702a(11) =3269a(12) =3890a(13) =4565a(14) =5294a(15) =6077a(16) =6914a(17) =7805a(18) =8750a(19) =9749a(20) =10802a(21) =11909a(22) =13070a(23) =14285a(24) =15554a(25) =16877a(26) =18254a(27) =19685a(28) =21170a(29) =22709