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 | 6 |
| 2 | 35 |
| 3 | 154 |
| 4 | 544 |
| 5 | 1614 |
| 6 | 4206 |
| 7 | 9880 |
| 8 | 21363 |
| 9 | 43136 |
| 10 | 82267 |
| 11 | 149456 |
| 12 | 260438 |
| 13 | 437670 |
| 14 | 712512 |
| 15 | 1127794 |
| 16 | 1741011 |
| 17 | 2628022 |
| 18 | 3887553 |
| 19 | 5646312 |
| 20 | 8065104 |
| 21 | 11345704 |
| 22 | 15738920 |
| 23 | 21553576 |
| 24 | 29166921 |
| 25 | 39036102 |
| 26 | 51711323 |
| 27 | 67850258 |
| 28 | 88234392 |