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 | 4 |
| 4 | 9 |
| 5 | 12 |
| 6 | 29 |
| 7 | 41 |
| 8 | 94 |
| 9 | 135 |
| 10 | 306 |
| 11 | 441 |
| 12 | 997 |
| 13 | 1437 |
| 14 | 3251 |
| 15 | 4688 |
| 16 | 10602 |
| 17 | 15290 |
| 18 | 34574 |
| 19 | 49864 |
| 20 | 112751 |
| 21 | 162615 |
| 22 | 367699 |
| 23 | 530313 |
| 24 | 1199127 |
| 25 | 1729440 |
| 26 | 3910553 |
| 27 | 5639993 |
| 28 | 12752965 |