Decimal part of cube root of a(n) starts with 8: first term of runs.

Terms

a(0) =6a(1) =22a(2) =55a(3) =111a(4) =196a(5) =315a(6) =475a(7) =682a(8) =942a(9) =1260a(10) =1644a(11) =2098a(12) =2629a(13) =3242a(14) =3945a(15) =4742a(16) =5640a(17) =6645a(18) =7763a(19) =8999a(20) =10361a(21) =11853a(22) =13482a(23) =15253a(24) =17174a(25) =19249a(26) =21485a(27) =23888a(28) =26464a(29) =29219