Numbers k such that the k-th triangular number contains only digits {0,6,9}.
A119092
Numbers k such that the k-th triangular number contains only digits {0,6,9}.
Terms
- a(0) =3a(1) =11a(2) =36a(3) =44a(4) =363a(5) =371a(6) =1095a(7) =1104a(8) =1175a(9) =44036a(10) =348396a(11) =440363a(12) =366060011a(13) =439560371a(14) =3715095963a(15) =140755746596
External references
- oeis: A119092