A252485 Least index k for which n occurs in A161885, or 0 if n never occurs.
144, 73, 12, 23, 14, 8, 15, 9, 7, 11, 6
Offset: 4
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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