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) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 22 |
| 3 | 183 |
| 4 | 820 |
| 5 | 2605 |
| 6 | 6666 |
| 7 | 14707 |
| 8 | 29128 |
| 9 | 53145 |
| 10 | 90910 |
| 11 | 147631 |
| 12 | 229692 |
| 13 | 344773 |
| 14 | 501970 |
| 15 | 711915 |
| 16 | 986896 |
| 17 | 1340977 |
| 18 | 1790118 |
| 19 | 2352295 |
| 20 | 3047620 |
| 21 | 3898461 |
| 22 | 4929562 |
| 23 | 6168163 |
| 24 | 7644120 |
| 25 | 9390025 |
| 26 | 11441326 |
| 27 | 13836447 |
| 28 | 16616908 |
| 29 | 19827445 |