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 | 3 |
| 2 | 3 |
| 3 | 1 |
| 4 | 6 |
| 5 | 3 |
| 6 | 13 |
| 7 | 9 |
| 8 | 30 |
| 9 | 29 |
| 10 | 78 |
| 11 | 93 |
| 12 | 224 |
| 13 | 315 |
| 14 | 687 |
| 15 | 1095 |
| 16 | 2250 |
| 17 | 3855 |
| 18 | 7685 |
| 19 | 13797 |
| 20 | 27012 |
| 21 | 49939 |
| 22 | 96909 |
| 23 | 182361 |
| 24 | 352698 |
| 25 | 671091 |
| 26 | 1296858 |
| 27 | 2485533 |
| 28 | 4806078 |
| 29 | 9256395 |
| 30 | 17920860 |
| 31 | 34636833 |
| 32 | 67159050 |
| 33 | 130150587 |
| 34 | 252745368 |