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 | 18 |
| 3 | 72 |
| 4 | 162 |
| 5 | 648 |
| 6 | 1152 |
| 7 | 1458 |
| 8 | 4608 |
| 9 | 5832 |
| 10 | 10368 |
| 11 | 13122 |
| 12 | 41472 |
| 13 | 52488 |
| 14 | 73728 |
| 15 | 93312 |
| 16 | 118098 |
| 17 | 294912 |
| 18 | 373248 |
| 19 | 472392 |
| 20 | 663552 |
| 21 | 839808 |
| 22 | 1062882 |
| 23 | 2654208 |
| 24 | 3359232 |
| 25 | 4251528 |
| 26 | 4718592 |
| 27 | 5971968 |
| 28 | 7558272 |
| 29 | 9565938 |
| 30 | 18874368 |
| 31 | 23887872 |