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 | 925 |
| 3 | 1426 |
| 4 | 6112 |
| 5 | 9801 |
| 6 | 140301 |
| 7 | 251945 |
| 8 | 578151 |
| 9 | 2112860 |
| 10 | 78883630 |
| 11 | 466005001 |
| 12 | 52244922262 |
| 13 | 394240923000 |
| 14 | 527042773467 |
| 15 | 706743866647 |
| 16 | 797657661680 |
| 17 | 869119510700 |
| 18 | 1445531162626 |
| 19 | 3905876132501 |
| 20 | 5205252778462 |
| 21 | 63253297234426 |
| 22 | 135399021815552 |