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 | 61 |
| 2 | 6 |
| 3 | 63 |
| 4 | 60 |
| 5 | 612 |
| 6 | 64 |
| 7 | 648 |
| 8 | 640 |
| 9 | 6048 |
| 10 | 6400 |
| 11 | 6912 |
| 12 | 6144 |
| 13 | 62208 |
| 14 | 61440 |
| 15 | 602112 |
| 16 | 65536 |
| 17 | 663552 |
| 18 | 655360 |
| 19 | 6029312 |
| 20 | 6553600 |
| 21 | 60162048 |
| 22 | 6291456 |
| 23 | 63700992 |
| 24 | 62914560 |
| 25 | 616562688 |
| 26 | 67108864 |
| 27 | 679477248 |
| 28 | 603979776 |
| 29 | 6115295232 |
| 30 | 6039797760 |