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 | 3 |
| 2 | 11 |
| 3 | 32 |
| 4 | 96 |
| 5 | 295 |
| 6 | 902 |
| 7 | 2747 |
| 8 | 8380 |
| 9 | 25577 |
| 10 | 78021 |
| 11 | 238029 |
| 12 | 726211 |
| 13 | 2215568 |
| 14 | 6759403 |
| 15 | 20622067 |
| 16 | 62915288 |
| 17 | 191946374 |
| 18 | 585603549 |
| 19 | 1786600798 |
| 20 | 5450687951 |
| 21 | 16629344149 |
| 22 | 50733978916 |
| 23 | 154782809780 |
| 24 | 472222339285 |
| 25 | 1440689299042 |
| 26 | 4395356771500 |