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 | 142 |
| 2 | 4978 |
| 3 | 43698 |
| 4 | 211374 |
| 5 | 737460 |
| 6 | 2076774 |
| 7 | 5012084 |
| 8 | 10807826 |
| 9 | 21368704 |
| 10 | 39388482 |
| 11 | 68614738 |
| 12 | 114064374 |
| 13 | 182196622 |
| 14 | 281328582 |
| 15 | 421889370 |
| 16 | 616590012 |
| 17 | 881040966 |
| 18 | 1234022180 |
| 19 | 1697613488 |
| 20 | 2298081194 |
| 21 | 3066132222 |
| 22 | 4036964078 |
| 23 | 5251498784 |