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 | 2 |
| 1 | 16 |
| 2 | 16 |
| 3 | 52 |
| 4 | 52 |
| 5 | 100 |
| 6 | 196 |
| 7 | 9232 |
| 8 | 9232 |
| 9 | 1540 |
| 10 | 3076 |
| 11 | 9232 |
| 12 | 12292 |
| 13 | 24580 |
| 14 | 49156 |
| 15 | 98308 |
| 16 | 196612 |
| 17 | 393220 |
| 18 | 786436 |
| 19 | 1572868 |
| 20 | 3145732 |
| 21 | 6291460 |
| 22 | 12582916 |
| 23 | 25165828 |
| 24 | 50331652 |
| 25 | 100663300 |
| 26 | 201326596 |
| 27 | 402653188 |
| 28 | 805306372 |
| 29 | 1610612740 |
| 30 | 3221225476 |
| 31 | 6442450948 |
| 32 | 12884901892 |