a(n) = 4*n^2 + 28*n + 10.

Terms

a(0) =42a(1) =82a(2) =130a(3) =186a(4) =250a(5) =322a(6) =402a(7) =490a(8) =586a(9) =690a(10) =802a(11) =922a(12) =1050a(13) =1186a(14) =1330a(15) =1482a(16) =1642a(17) =1810a(18) =1986a(19) =2170a(20) =2362a(21) =2562a(22) =2770a(23) =2986a(24) =3210a(25) =3442a(26) =3682a(27) =3930a(28) =4186a(29) =4450