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 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 5 |
| 4 | 7 |
| 5 | 12 |
| 6 | 103 |
| 7 | 115 |
| 8 | 218 |
| 9 | 551 |
| 10 | 769 |
| 11 | 1320 |
| 12 | 11329 |
| 13 | 12649 |
| 14 | 23978 |
| 15 | 60605 |
| 16 | 84583 |
| 17 | 145188 |
| 18 | 1246087 |
| 19 | 1391275 |
| 20 | 2637362 |
| 21 | 6665999 |
| 22 | 9303361 |
| 23 | 15969360 |
| 24 | 137058241 |
| 25 | 153027601 |
| 26 | 290085842 |
| 27 | 733199285 |
| 28 | 1023285127 |