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 | 4 |
| 2 | 36 |
| 3 | 24 |
| 4 | 450 |
| 5 | 40 |
| 6 | 2205 |
| 7 | 168 |
| 8 | 350 |
| 9 | 120 |
| 10 | 38115 |
| 11 | 88 |
| 12 | 40990950 |
| 13 | 10920 |
| 14 | 5005 |
| 15 | 24 |
| 16 | 130180050 |
| 17 | 136 |
| 18 | 1935088155 |
| 19 | 3192 |
| 20 | 177827650 |
| 21 | 1320 |
| 22 | 1539340803 |
| 23 | 184 |
| 24 | 304521767550 |
| 25 | 10920 |
| 26 | 37182145 |
| 27 | 24 |
| 28 | 2814316555050 |
| 29 | 1160 |