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 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 11 |
| 5 | 32 |
| 6 | 114 |
| 7 | 467 |
| 8 | 2130 |
| 9 | 10642 |
| 10 | 57629 |
| 11 | 335381 |
| 12 | 2082582 |
| 13 | 13716502 |
| 14 | 95352529 |
| 15 | 696790819 |
| 16 | 5334094259 |
| 17 | 42649956716 |
| 18 | 355261078352 |
| 19 | 3075741331481 |
| 20 | 27620835538407 |
| 21 | 256810928552476 |
| 22 | 2468108094076860 |
| 23 | 24481671811988907 |
| 24 | 250296546308500181 |
| 25 | 2634309876797453868 |
| 26 | 28509045368598994348 |