a(n) = n^3 - a(n-2) for n >= 2 and a(0)=0, a(1)=1.

Terms

a(0) =0a(1) =1a(2) =8a(3) =26a(4) =56a(5) =99a(6) =160a(7) =244a(8) =352a(9) =485a(10) =648a(11) =846a(12) =1080a(13) =1351a(14) =1664a(15) =2024a(16) =2432a(17) =2889a(18) =3400a(19) =3970a(20) =4600a(21) =5291a(22) =6048a(23) =6876a(24) =7776a(25) =8749a(26) =9800a(27) =10934a(28) =12152a(29) =13455