A173990 Incorrect version of A007178.
1, 1, 3, 13, 75, 530, 4449, 43236
Offset: 1
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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