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 | 1 |
| 3 | 2 |
| 4 | 1 |
| 5 | 3 |
| 6 | 3 |
| 7 | 38 |
| 8 | 1 |
| 9 | 32 |
| 10 | 105 |
| 11 | 216 |
| 12 | 715 |
| 13 | 67 |
| 14 | 271 |
| 15 | 84 |
| 16 | 881 |
| 17 | 1530 |
| 18 | 8575 |
| 19 | 25230 |
| 20 | 7000 |
| 21 | 215747 |
| 22 | 170340 |
| 23 | 361604 |
| 24 | 3037958 |
| 25 | 8412642 |
| 26 | 880890 |
| 27 | 2162059 |
| 28 | 5110722 |
| 29 | 55981 |
| 30 | 3569337 |