Decimal part of cube root of a(n) starts with 4: first term of runs.

Terms

a(0) =3a(1) =14a(2) =40a(3) =86a(4) =158a(5) =263a(6) =406a(7) =593a(8) =831a(9) =1125a(10) =1482a(11) =1907a(12) =2407a(13) =2986a(14) =3653a(15) =4411a(16) =5269a(17) =6230a(18) =7302a(19) =8490a(20) =9801a(21) =11240a(22) =12813a(23) =14527a(24) =16388a(25) =18400a(26) =20571a(27) =22907a(28) =25413a(29) =28095