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 | 9 |
| 2 | 479 |
| 3 | 5646 |
| 4 | 34396 |
| 5 | 143695 |
| 6 | 469623 |
| 7 | 1291052 |
| 8 | 3121008 |
| 9 | 6830757 |
| 10 | 13811655 |
| 11 | 26179802 |
| 12 | 47028540 |
| 13 | 80733835 |
| 14 | 133317583 |
| 15 | 212873880 |
| 16 | 330063296 |
| 17 | 498680193 |
| 18 | 736298127 |
| 19 | 1064998374 |
| 20 | 1512186620 |
| 21 | 2111502855 |
| 22 | 2903829511 |
| 23 | 3938402884 |