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.
| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 16 |
| 3 | 102 |
| 4 | 872 |
| 5 | 4444 |
| 6 | 26906 |
| 7 | 116036 |
| 8 | 592110 |
| 9 | 2411426 |
| 10 | 11438402 |
| 11 | 45729992 |
| 12 | 209204918 |
| 13 | 830949994 |
| 14 | 3719941006 |
| 15 | 14733123252 |
| 16 | 64989888570 |