a(0) = 1, a(n) = 40*n^2 + 2 for n>0.

Terms

a(0) =1a(1) =42a(2) =162a(3) =362a(4) =642a(5) =1002a(6) =1442a(7) =1962a(8) =2562a(9) =3242a(10) =4002a(11) =4842a(12) =5762a(13) =6762a(14) =7842a(15) =9002a(16) =10242a(17) =11562a(18) =12962a(19) =14442a(20) =16002a(21) =17642a(22) =19362a(23) =21162a(24) =23042a(25) =25002a(26) =27042a(27) =29162a(28) =31362a(29) =33642