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 | 1053 |
| 2 | 160056 |
| 3 | 4313088 |
| 4 | 28481544 |
| 5 | 655589376 |
| 6 | 17666408448 |
| 7 | 30011240259 |
| 8 | 116660404224 |
| 9 | 168658209720 |
| 10 | 257425688520 |
| 11 | 2585493646164 |
| 12 | 2685294084096 |
| 13 | 7548492087864 |
| 14 | 9283085543160 |
| 15 | 9283085543160 |
| 16 | 32912757834840 |
| 17 | 62027889765660 |
| 18 | 72361609003008 |
| 19 | 81736097625000 |