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 | 6 |
| 2 | 1 |
| 3 | 48 |
| 4 | 12 |
| 5 | 1 |
| 6 | 495 |
| 7 | 150 |
| 8 | 18 |
| 9 | 1 |
| 10 | 6338 |
| 11 | 2160 |
| 12 | 306 |
| 13 | 24 |
| 14 | 1 |
| 15 | 97681 |
| 16 | 36103 |
| 17 | 5643 |
| 18 | 516 |
| 19 | 30 |
| 20 | 1 |
| 21 | 1767845 |
| 22 | 694079 |
| 23 | 115917 |
| 24 | 11592 |
| 25 | 780 |
| 26 | 36 |
| 27 | 1 |
| 28 | 36839663 |
| 29 | 15164785 |
| 30 | 2657946 |
| 31 | 282122 |
| 32 | 20655 |
| 33 | 1098 |
| 34 | 42 |
| 35 | 1 |
| 36 | 870101407 |
| 37 | 372225541 |
| 38 | 67708113 |
| 39 | 7502470 |
| 40 | 580780 |