a(1)=0, a(n) = n^3 - a(n-1).

Terms

a(0) =0a(1) =8a(2) =19a(3) =45a(4) =80a(5) =136a(6) =207a(7) =305a(8) =424a(9) =576a(10) =755a(11) =973a(12) =1224a(13) =1520a(14) =1855a(15) =2241a(16) =2672a(17) =3160a(18) =3699a(19) =4301a(20) =4960a(21) =5688a(22) =6479a(23) =7345a(24) =8280a(25) =9296a(26) =10387a(27) =11565a(28) =12824a(29) =14176