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 | 1 |
| 2 | 5 |
| 3 | 65 |
| 4 | 377 |
| 5 | 1189 |
| 6 | 1469 |
| 7 | 25805 |
| 8 | 58589 |
| 9 | 134945 |
| 10 | 137345 |
| 11 | 170585 |
| 12 | 272609 |
| 13 | 285389 |
| 14 | 420209 |
| 15 | 538733 |
| 16 | 592409 |
| 17 | 618449 |
| 18 | 680705 |
| 19 | 778805 |
| 20 | 1163065 |
| 21 | 1520441 |
| 22 | 1700945 |
| 23 | 2099201 |
| 24 | 2831009 |
| 25 | 4020029 |
| 26 | 4174169 |
| 27 | 4516109 |
| 28 | 5059889 |
| 29 | 5215769 |