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 | 3 |
| 3 | 6 |
| 4 | 21 |
| 5 | 15 |
| 6 | 66 |
| 7 | 28 |
| 8 | 1365 |
| 9 | 1716 |
| 10 | 3060 |
| 11 | 66 |
| 12 | 20475 |
| 13 | 91 |
| 14 | 134596 |
| 15 | 735471 |
| 16 | 7888725 |
| 17 | 153 |
| 18 | 3262623 |
| 19 | 190 |
| 20 | 118030185 |
| 21 | 225792840 |
| 22 | 254186856 |
| 23 | 276 |
| 24 | 2558620845 |
| 25 | 84672315 |
| 26 | 11058116888 |
| 27 | 113380261800 |
| 28 | 558383307300 |
| 29 | 435 |
| 30 | 11969016345 |
| 31 | 496 |
| 32 | 366395202809685 |
| 33 | 16735679449896 |
| 34 | 21094923659355 |