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 | 24 |
| 3 | 77 |
| 4 | 215 |
| 5 | 637 |
| 6 | 802 |
| 7 | 8002 |
| 8 | 25815 |
| 9 | 80002 |
| 10 | 800002 |
| 11 | 2158797 |
| 12 | 8000002 |
| 13 | 25768322 |
| 14 | 66382562 |
| 15 | 80000002 |
| 16 | 800000002 |
| 17 | 8000000002 |
| 18 | 21596311362 |
| 19 | 80000000002 |
| 20 | 800000000002 |
| 21 | 8000000000002 |
| 22 | 80000000000002 |
| 23 | 800000000000002 |