A173017 A006987(a(n))=A000984(n).
1, 4, 7, 19, 25, 56, 73, 144, 180, 346, 430, 826
Offset: 2
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.