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 | 3 |
| 2 | 89 |
| 3 | 3677 |
| 4 | 6321 |
| 5 | 8787 |
| 6 | 48744 |
| 7 | 51254 |
| 8 | 87618 |
| 9 | 3762555 |
| 10 | 6237443 |
| 11 | 9217101 |
| 12 | 3266298275 |
| 13 | 3520463765 |
| 14 | 6479536233 |
| 15 | 6733701723 |
| 16 | 8063694649 |
| 17 | 8317860139 |
| 18 | 4689524709430934475 |
| 19 | 5310475290569065523 |
| 20 | 7416797436703661748 |