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 | 29 |
| 2 | 199 |
| 3 | 1120 |
| 4 | 3627 |
| 5 | 11576 |
| 6 | 28434 |
| 7 | 69136 |
| 8 | 139566 |
| 9 | 281169 |
| 10 | 509465 |
| 11 | 917176 |
| 12 | 1519297 |
| 13 | 2507652 |
| 14 | 3907871 |
| 15 | 6070416 |
| 16 | 8983497 |
| 17 | 13266213 |
| 18 | 18901105 |
| 19 | 26867168 |
| 20 | 37023721 |
| 21 | 50931188 |
| 22 | 68369984 |
| 23 | 91636040 |
| 24 | 120165960 |
| 25 | 157385059 |
| 26 | 202502115 |
| 27 | 260240316 |