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 | 6 |
| 3 | 59 |
| 4 | 820 |
| 5 | 14701 |
| 6 | 322602 |
| 7 | 8372951 |
| 8 | 250865928 |
| 9 | 8521068601 |
| 10 | 323549740910 |
| 11 | 13580568049619 |
| 12 | 624382580541564 |
| 13 | 31205548459028581 |
| 14 | 1684475234207001810 |
| 15 | 97668358035547076399 |
| 16 | 6053753722969711734928 |
| 17 | 399450077357965427428849 |
| 18 | 27955451661334610208284502 |