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 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 1 |
| 7 | 1 |
| 8 | 0 |
| 9 | 25 |
| 10 | 0 |
| 11 | 100 |
| 12 | 0 |
| 13 | 100 |
| 14 | 0 |
| 15 | 25 |
| 16 | 0 |
| 17 | 1 |
| 18 | 2252 |
| 19 | 15150 |
| 20 | 48600 |
| 21 | 99350 |
| 22 | 144150 |
| 23 | 156753 |
| 24 | 131000 |
| 25 | 87075 |
| 26 | 45000 |
| 27 | 19300 |
| 28 | 6000 |
| 29 | 1800 |
| 30 | 250 |
| 31 | 75 |
| 32 | 0 |
| 33 | 1 |
| 34 | 44127009 |
| 35 | 274314600 |
| 36 | 822998550 |
| 37 | 1583402400 |
| 38 | 2189652825 |
| 39 | 2311947008 |