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 | 0 |
| 3 | 1 |
| 4 | 1 |
| 5 | 5 |
| 6 | 1 |
| 7 | 43 |
| 8 | 13 |
| 9 | 249 |
| 10 | 19 |
| 11 | 2291 |
| 12 | 32 |
| 13 | 6397 |
| 14 | 1379 |
| 15 | 3737 |
| 16 | 36599 |
| 17 | 423953 |
| 18 | 4727 |
| 19 | 2579419 |
| 20 | 436486 |
| 21 | 1935539 |
| 22 | 1262563 |
| 23 | 30364247 |
| 24 | 1549256 |
| 25 | 1028011945 |
| 26 | 94055426 |
| 27 | 2754232963 |
| 28 | 230491358 |
| 29 | 77544004469 |
| 30 | 7188548 |
| 31 | 1277242663471 |
| 32 | 4089553744057 |
| 33 | 235736847903 |