A102864 Leading column of A102416.
2, 2, 4, 16, 28, 56, 108, 216, 424, 848, 1684, 3368, 6712, 13424, 26808, 53616, 107152, 214304, 428460, 856920, 1713544, 3427088
Offset: 0
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.