Numbers k such that the k-th triangular number contains only digits {3,6,8}.
A119197
Numbers k such that the k-th triangular number contains only digits {3,6,8}.
Terms
- a(0) =2a(1) =3a(2) =8a(3) =11a(4) =36a(5) =816a(6) =4211a(7) =13163a(8) =409483a(9) =1128391a(10) =2583163a(11) =87935963a(12) =356051588a(13) =35683017483a(14) =87964636836
External references
- oeis: A119197