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 | 2 |
| 1 | 20 |
| 2 | 174 |
| 3 | 1504 |
| 4 | 13300 |
| 5 | 120744 |
| 6 | 1122198 |
| 7 | 10638464 |
| 8 | 102541428 |
| 9 | 1002305040 |
| 10 | 9914663308 |
| 11 | 99085515840 |
| 12 | 999104604784 |
| 13 | 10153152363648 |
| 14 | 103892246982390 |
| 15 | 1069610792999424 |
| 16 | 11072575568623300 |
| 17 | 115189593628215600 |