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 | 3 |
| 3 | 10 |
| 4 | 17 |
| 5 | 626 |
| 6 | 37 |
| 7 | 117650 |
| 8 | 4097 |
| 9 | 531442 |
| 10 | 10001 |
| 11 | 25937424602 |
| 12 | 20737 |
| 13 | 23298085122482 |
| 14 | 7529537 |
| 15 | 2562890626 |
| 16 | 4294967297 |
| 17 | 48661191875666868482 |
| 18 | 34012225 |
| 19 | 104127350297911241532842 |
| 20 | 25600000001 |
| 21 | 7355827511386642 |
| 22 | 26559922791425 |
| 23 | 907846434775996175406740561330 |
| 24 | 110075314177 |