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 | 46 |
| 2 | 1375 |
| 3 | 34595 |
| 4 | 805233 |
| 5 | 18144126 |
| 6 | 405723890 |
| 7 | 9135723740 |
| 8 | 209010337393 |
| 9 | 4886030196762 |
| 10 | 117128494141581 |
| 11 | 2885780810969745 |
| 12 | 73173111964806346 |
| 13 | 1910999806521618802 |
| 14 | 51421630750891773900 |
| 15 | 1425733715141171349892 |