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) |
|---|---|
| 0 | 1 |
| 1 | 82 |
| 2 | 3321 |
| 3 | 88560 |
| 4 | 1749060 |
| 5 | 27285336 |
| 6 | 350161812 |
| 7 | 3801756816 |
| 8 | 35641470150 |
| 9 | 293052087900 |
| 10 | 2139280241670 |
| 11 | 14002561581840 |
| 12 | 82848489359220 |
| 13 | 446107250395800 |
| 14 | 2198671448379300 |
| 15 | 9967310565986160 |
| 16 | 41738112995067045 |
| 17 | 162042085745554410 |
| 18 | 585151976303390925 |