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 | 9 |
| 3 | 82 |
| 4 | 1089 |
| 5 | 15626 |
| 6 | 287010 |
| 7 | 5764802 |
| 8 | 135270401 |
| 9 | 3487315843 |
| 10 | 100244173394 |
| 11 | 3138428376722 |
| 12 | 107072686593858 |
| 13 | 3937376385699290 |
| 14 | 155601328490478978 |
| 15 | 6568412173896940652 |
| 16 | 295165920677390712833 |
| 17 | 14063084452067724991010 |