a(n) + a(n+1) + a(n+2) = n^3.

Terms

a(0) =0a(1) =0a(2) =0a(3) =1a(4) =7a(5) =19a(6) =38a(7) =68a(8) =110a(9) =165a(10) =237a(11) =327a(12) =436a(13) =568a(14) =724a(15) =905a(16) =1115a(17) =1355a(18) =1626a(19) =1932a(20) =2274a(21) =2653a(22) =3073a(23) =3535a(24) =4040a(25) =4592a(26) =5192a(27) =5841a(28) =6543a(29) =7299