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 | 0 |
| 2 | 124 |
| 3 | 4091 |
| 4 | 125848 |
| 5 | 3786544 |
| 6 | 114271723 |
| 7 | 3464680837 |
| 8 | 105517939849 |
| 9 | 3226317873349 |
| 10 | 98993221147045 |
| 11 | 3046729346513705 |
| 12 | 94021836073596160 |
| 13 | 2908369805243433206 |
| 14 | 90152447341950898741 |
| 15 | 2799699600908925841358 |