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 | 16385 |
| 3 | 4782970 |
| 4 | 268451841 |
| 5 | 6103515626 |
| 6 | 39184481725 |
| 7 | 678223072850 |
| 8 | 4398314962945 |
| 9 | 22876797237931 |
| 10 | 10000610353201 |
| 11 | 379749833583242 |
| 12 | 213999516991295 |
| 13 | 3937376385699290 |
| 14 | 5556342524323625 |
| 15 | 5838586426737844 |
| 16 | 72061992352890881 |
| 17 | 168377826559400930 |
| 18 | 374836322743499435 |