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 | 44 |
| 2 | 216 |
| 3 | 968 |
| 4 | 3860 |
| 5 | 16132 |
| 6 | 62064 |
| 7 | 247236 |
| 8 | 1044612 |
| 9 | 4073156 |
| 10 | 16161828 |
| 11 | 64513624 |
| 12 | 253336008 |
| 13 | 1046901060 |
| 14 | 4267950372 |
| 15 | 16347521428 |
| 16 | 68075401492 |
| 17 | 268150646664 |
| 18 | 1086041921700 |
| 19 | 4254535157576 |
| 20 | 17346201751972 |
| 21 | 66879000490408 |
| 22 | 276319489325472 |