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) |
|---|---|
| 0 | 22 |
| 1 | 23 |
| 2 | 45 |
| 3 | 68 |
| 4 | 181 |
| 5 | 1154 |
| 6 | 12875 |
| 7 | 78404 |
| 8 | 169683 |
| 9 | 248087 |
| 10 | 417770 |
| 11 | 665857 |
| 12 | 29715478 |
| 13 | 30381335 |
| 14 | 60096813 |
| 15 | 90478148 |
| 16 | 241053109 |
| 17 | 1536796802 |
| 18 | 17145817931 |
| 19 | 104411704388 |
| 20 | 225969226707 |
| 21 | 330380931095 |
| 22 | 556350157802 |
| 23 | 886731088897 |
| 24 | 39572518069270 |
| 25 | 40459249158167 |