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 | 3 |
| 4 | 4 |
| 5 | 12 |
| 6 | 17 |
| 7 | 51 |
| 8 | 74 |
| 9 | 224 |
| 10 | 328 |
| 11 | 1008 |
| 12 | 1478 |
| 13 | 4630 |
| 14 | 6767 |
| 15 | 21663 |
| 16 | 31472 |
| 17 | 103100 |
| 18 | 148642 |
| 19 | 498520 |
| 20 | 712648 |
| 21 | 2446218 |
| 22 | 3466398 |
| 23 | 12167456 |
| 24 | 17093556 |
| 25 | 61276838 |
| 26 | 85380372 |
| 27 | 312096590 |
| 28 | 431554188 |
| 29 | 1605820974 |
| 30 | 2205077509 |