Averages of two consecutive even cubes: (n^3 + (n+2)^3)/2.

Terms

a(0) =4a(1) =36a(2) =140a(3) =364a(4) =756a(5) =1364a(6) =2236a(7) =3420a(8) =4964a(9) =6916a(10) =9324a(11) =12236a(12) =15700a(13) =19764a(14) =24476a(15) =29884a(16) =36036a(17) =42980a(18) =50764a(19) =59436a(20) =69044a(21) =79636a(22) =91260a(23) =103964a(24) =117796a(25) =132804a(26) =149036a(27) =166540a(28) =185364a(29) =205556