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 | 12 |
| 2 | 124 |
| 3 | 1338 |
| 4 | 14656 |
| 5 | 161082 |
| 6 | 1771624 |
| 7 | 19487298 |
| 8 | 214359136 |
| 9 | 2357948202 |
| 10 | 25937425624 |
| 11 | 285311672658 |
| 12 | 3138428380816 |
| 13 | 34522712152122 |
| 14 | 379749833599624 |
| 15 | 4177248169448418 |
| 16 | 45949729863637696 |
| 17 | 505447028499424842 |