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 | 3 |
| 3 | 7 |
| 4 | 14 |
| 5 | 39 |
| 6 | 78 |
| 7 | 394 |
| 8 | 1001 |
| 9 | 2002 |
| 10 | 3003 |
| 11 | 9545 |
| 12 | 10546 |
| 13 | 27634 |
| 14 | 154257 |
| 15 | 398959 |
| 16 | 797918 |
| 17 | 1196877 |
| 18 | 1595836 |
| 19 | 5394991 |
| 20 | 5793950 |
| 21 | 15786014 |
| 22 | 130087267 |
| 23 | 312129649 |
| 24 | 624259298 |