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 | 14 |
| 2 | 203 |
| 3 | 3367 |
| 4 | 64750 |
| 5 | 1435497 |
| 6 | 36312626 |
| 7 | 1036877170 |
| 8 | 33086963196 |
| 9 | 1169366274321 |
| 10 | 45412092740791 |
| 11 | 1924418011638535 |
| 12 | 88445828358934074 |
| 13 | 4384910640997110602 |
| 14 | 233384463606862044134 |
| 15 | 13278878088344760573344 |