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 | 0 |
| 1 | 0 |
| 2 | 2 |
| 3 | 0 |
| 4 | 10 |
| 5 | 12 |
| 6 | 6 |
| 7 | 0 |
| 8 | 170 |
| 9 | 204 |
| 10 | 102 |
| 11 | 240 |
| 12 | 90 |
| 13 | 60 |
| 14 | 150 |
| 15 | 0 |
| 16 | 43690 |
| 17 | 52428 |
| 18 | 26214 |
| 19 | 61680 |
| 20 | 23130 |
| 21 | 15420 |
| 22 | 38550 |
| 23 | 65280 |
| 24 | 21930 |
| 25 | 13260 |
| 26 | 39270 |
| 27 | 4080 |
| 28 | 42330 |
| 29 | 49980 |
| 30 | 27030 |
| 31 | 0 |
| 32 | 2863311530 |
| 33 | 3435973836 |
| 34 | 1717986918 |
| 35 | 4042322160 |
| 36 | 1515870810 |
| 37 | 1010580540 |