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 | 1 |
| 2 | 6 |
| 3 | 18 |
| 4 | 30 |
| 5 | 36 |
| 6 | 48 |
| 7 | 208 |
| 8 | 5298 |
| 9 | 6132 |
| 10 | 6601 |
| 11 | 8280 |
| 12 | 12228 |
| 13 | 17052 |
| 14 | 68220 |
| 15 | 113990 |
| 16 | 120504 |
| 17 | 438570 |
| 18 | 1015416 |
| 19 | 1343232 |
| 20 | 1848400 |
| 21 | 5338548 |
| 22 | 12727143 |
| 23 | 83877810 |
| 24 | 330963120 |
| 25 | 409185360 |
| 26 | 418561770 |
| 27 | 2428646640 |
| 28 | 2834120595 |
| 29 | 2876557200 |
| 30 | 2940992640 |
| 31 | 7218753758 |
| 32 | 7306145012 |
| 33 | 7609637140 |