Partial sums of cubes of Lucas numbers.

Terms

a(0) =1a(1) =28a(2) =92a(3) =435a(4) =1766a(5) =7598a(6) =31987a(7) =135810a(8) =574786a(9) =2435653a(10) =10316252a(11) =43702500a(12) =185123261a(13) =784200368a(14) =3321916912a(15) =14071880655a(16) =59609419066a(17) =252509590018