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 | 0 |
| 2 | 233 |
| 3 | 499 |
| 4 | 1394 |
| 5 | 110036 |
| 6 | 729297 |
| 7 | 15243860 |
| 8 | 204666568 |
| 9 | 2933712940 |
| 10 | 44201068772 |
| 11 | 631467436258 |
| 12 | 9310616032492 |
| 13 | 135219892970154 |
| 14 | 1977188363830961 |
| 15 | 28827781254085548 |
| 16 | 420748594948205104 |
| 17 | 6138969205830064789 |