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 | 2 |
| 3 | 3 |
| 4 | 10 |
| 5 | 12 |
| 6 | 32 |
| 7 | 42 |
| 8 | 268 |
| 9 | 288 |
| 10 | 656 |
| 11 | 924 |
| 12 | 4360 |
| 13 | 3816 |
| 14 | 11336 |
| 15 | 13536 |
| 16 | 195472 |
| 17 | 200832 |
| 18 | 423104 |
| 19 | 618576 |
| 20 | 2404960 |
| 21 | 2506464 |
| 22 | 6994784 |
| 23 | 8820864 |
| 24 | 85524160 |
| 25 | 60669696 |
| 26 | 145981952 |
| 27 | 194348448 |
| 28 | 1073479840 |