a(n) = 2*n^2 + 16*n + 6.

Terms

a(0) =24a(1) =46a(2) =72a(3) =102a(4) =136a(5) =174a(6) =216a(7) =262a(8) =312a(9) =366a(10) =424a(11) =486a(12) =552a(13) =622a(14) =696a(15) =774a(16) =856a(17) =942a(18) =1032a(19) =1126a(20) =1224a(21) =1326a(22) =1432a(23) =1542a(24) =1656a(25) =1774a(26) =1896a(27) =2022a(28) =2152a(29) =2286