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 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 6 |
| 5 | 10 |
| 6 | 19 |
| 7 | 52 |
| 8 | 118 |
| 9 | 1054 |
| 10 | 3201 |
| 11 | 8586 |
| 12 | 9802 |
| 13 | 16120 |
| 14 | 60556 |
| 15 | 140698 |
| 16 | 145216 |
| 17 | 11273536 |
| 18 | 29886160 |
| 19 | 44868748 |
| 20 | 8748377956 |
| 21 | 325377469696 |
| 22 | 2368739714188 |