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 | 0 |
| 2 | 1 |
| 3 | 313 |
| 4 | 30853 |
| 5 | 42992 |
| 6 | 247753 |
| 7 | 584989 |
| 8 | 4130748 |
| 9 | 4390945 |
| 10 | 4780473 |
| 11 | 5871073 |
| 12 | 7615813 |
| 13 | 8123113 |
| 14 | 13514233 |
| 15 | 13971013 |
| 16 | 19128653 |
| 17 | 19392433 |
| 18 | 43794833 |
| 19 | 51644173 |
| 20 | 67314973 |
| 21 | 69522073 |
| 22 | 108168073 |
| 23 | 124498753 |
| 24 | 124510153 |
| 25 | 177694105 |
| 26 | 198750308 |
| 27 | 208302253 |
| 28 | 212791885 |
| 29 | 230815033 |