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 | 1 |
| 2 | 5 |
| 3 | 12 |
| 4 | 38 |
| 5 | 107 |
| 6 | 316 |
| 7 | 915 |
| 8 | 2671 |
| 9 | 7771 |
| 10 | 22640 |
| 11 | 65922 |
| 12 | 191993 |
| 13 | 559112 |
| 14 | 1628281 |
| 15 | 4741905 |
| 16 | 13809541 |
| 17 | 40216516 |
| 18 | 117119750 |
| 19 | 341079507 |
| 20 | 993301748 |
| 21 | 2892722267 |
| 22 | 8424270271 |
| 23 | 24533405595 |
| 24 | 71446899736 |
| 25 | 208069745986 |
| 26 | 605946785585 |