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 | 6 |
| 3 | 2 |
| 4 | 3 |
| 5 | 5 |
| 6 | 9 |
| 7 | 792 |
| 8 | 2555 |
| 9 | 10368 |
| 10 | 23464 |
| 11 | 84888 |
| 12 | 1047087 |
| 13 | 2483200 |
| 14 | 54721675 |
| 15 | 228537856 |
| 16 | 1394007616 |
| 17 | 5090444477 |
| 18 | 51286309703 |
| 19 | 608427634303 |
| 20 | 3260058995493 |
| 21 | 11314112766137 |
| 22 | 51848285189219 |
| 23 | 1034026438223449 |
| 24 | 11075640379838488 |
| 25 | 181108172062981288 |
| 26 | 1566869630866485093 |