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 | 1 |
| 1 | 23 |
| 2 | 360 |
| 3 | 4810 |
| 4 | 59111 |
| 5 | 690573 |
| 6 | 7801990 |
| 7 | 86089520 |
| 8 | 933531621 |
| 9 | 9989073523 |
| 10 | 105774639620 |
| 11 | 1110701801430 |
| 12 | 11583617458531 |
| 13 | 120125571974873 |
| 14 | 1239860303429250 |
| 15 | 12746044308940540 |
| 16 | 130587414625807841 |