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 | 47 |
| 2 | 1517 |
| 3 | 15101 |
| 4 | 85771 |
| 5 | 345241 |
| 6 | 1104357 |
| 7 | 2993875 |
| 8 | 7169025 |
| 9 | 15586785 |
| 10 | 31358615 |
| 11 | 59213403 |
| 12 | 106061265 |
| 13 | 181644529 |
| 14 | 299379215 |
| 15 | 477297063 |
| 16 | 739082975 |
| 17 | 1115418273 |
| 18 | 1645395261 |
| 19 | 2378011923 |
| 20 | 3374165639 |
| 21 | 4708618657 |
| 22 | 6472020879 |
| 23 | 8773706563 |