a(0) = 1, a(n) = 22*n^2 + 2 for n>0.

Terms

a(0) =1a(1) =24a(2) =90a(3) =200a(4) =354a(5) =552a(6) =794a(7) =1080a(8) =1410a(9) =1784a(10) =2202a(11) =2664a(12) =3170a(13) =3720a(14) =4314a(15) =4952a(16) =5634a(17) =6360a(18) =7130a(19) =7944a(20) =8802a(21) =9704a(22) =10650a(23) =11640a(24) =12674a(25) =13752a(26) =14874a(27) =16040a(28) =17250a(29) =18504