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 | 2 |
| 2 | 2 |
| 3 | 1 |
| 4 | 2 |
| 5 | 30 |
| 6 | 18 |
| 7 | 126 |
| 8 | 2 |
| 9 | 504 |
| 10 | 430 |
| 11 | 979 |
| 12 | 18 |
| 13 | 676 |
| 14 | 2198 |
| 15 | 2340 |
| 16 | 976 |
| 17 | 78812 |
| 18 | 3756 |
| 19 | 183920 |
| 20 | 142580 |
| 21 | 352884 |
| 22 | 122870 |
| 23 | 1358104 |
| 24 | 56544 |
| 25 | 2777040 |
| 26 | 4511 |
| 27 | 44568603 |
| 28 | 304913 |
| 29 | 463347935 |
| 30 | 5921860 |
| 31 | 855372646 |
| 32 | 26636800 |
| 33 | 3315517623 |
| 34 | 2359940 |
| 35 | 24752893585 |
| 36 | 135322524 |
| 37 | 8049125817 |
| 38 | 535150200 |
| 39 | 132932362849 |