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 | 90 |
| 2 | 5265 |
| 3 | 255150 |
| 4 | 11160261 |
| 5 | 458810730 |
| 6 | 18124795305 |
| 7 | 697117731750 |
| 8 | 26323112938221 |
| 9 | 981154011007170 |
| 10 | 36233774365169745 |
| 11 | 1329174591745823550 |
| 12 | 48521083977375207381 |
| 13 | 1764912230785563088410 |
| 14 | 64027726517340144702585 |