Sum of squares of consecutive positive noncubes.

Terms

a(0) =139a(1) =5997a(2) =78414a(3) =553810a(4) =2677065a(5) =10009839a(6) =31098172a(7) =84004164a(8) =203427495a(9) =451263505a(10) =931565514a(11) =1811000022a(12) =3346004389a(13) =5917977555a(14) =10077955320a(15) =16602342664a(16) =26561396547a(17) =41402273589a(18) =63048577990a(19) =94018466010