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) |
|---|---|
| 1 | 1 |
| 2 | 6 |
| 3 | 18 |
| 4 | 73 |
| 5 | 316 |
| 6 | 3029 |
| 7 | 46884 |
| 8 | 935951 |
| 9 | 38183961 |
| 10 | 2877277695 |
| 11 | 323244675173 |
| 12 | 63938089963412 |
| 13 | 22744080515948233 |
| 14 | 13243562482553493420 |