a(n) = sum of cubes of p(j) - p(i), for 0 <= i < j <= n, where p(0) = 1.

Terms

a(0) =1a(1) =10a(2) =109a(3) =522a(4) =3043a(5) =7838a(6) =21061a(7) =41110a(8) =81955a(9) =178510a(10) =302075a(11) =539382a(12) =885581a(13) =1297982a(14) =1869659a(15) =2758406a(16) =4076543a(17) =5566538a(18) =7670387a(19) =10274536a(20) =13158999a(21) =17017244a(22) =21645981a(23) =27634492a(24) =35865619a(25) =45423702a(26) =55700987a(27) =67534604a(28) =80208039a(29) =94691374