A179815 Numbers such that n=2*k in triangle A175105.
1, 3, 21, 163, 1259, 9657, 73949, 566797, 4352755, 33501979, 258431853, 1997743677, 15473296249
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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