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 | 1 |
| 3 | 3 |
| 4 | 5 |
| 5 | 85 |
| 6 | 107 |
| 7 | 257 |
| 8 | 5049 |
| 9 | 9201 |
| 10 | 11253 |
| 11 | 11757 |
| 12 | 210099 |
| 13 | 399171 |
| 14 | 512607 |
| 15 | 786435 |
| 16 | 12916899 |
| 17 | 19992857 |
| 18 | 22468309 |
| 19 | 1052109663 |
| 20 | 15935958711 |
| 21 | 24051338445 |
| 22 | 37344016593 |
| 23 | 71859215265 |
| 24 | 72822171105 |
| 25 | 1566399158893 |
| 26 | 3425211644643 |