a(0) = 1, a(n) = 31*n^2 + 2 for n>0.

Terms

a(0) =1a(1) =33a(2) =126a(3) =281a(4) =498a(5) =777a(6) =1118a(7) =1521a(8) =1986a(9) =2513a(10) =3102a(11) =3753a(12) =4466a(13) =5241a(14) =6078a(15) =6977a(16) =7938a(17) =8961a(18) =10046a(19) =11193a(20) =12402a(21) =13673a(22) =15006a(23) =16401a(24) =17858a(25) =19377a(26) =20958a(27) =22601a(28) =24306a(29) =26073