A119195 Numbers k such that the k-th triangular number contains only digits {3,6,7}.
2, 3, 8, 11, 36, 391, 816, 8563, 39183, 2594751, 12436829803183
Offset: 1
Links
- G. Resta, Tridigital Triangular Numbers
This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
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