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) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 6 |
| 4 | 2 |
| 5 | 8 |
| 6 | 18 |
| 7 | 62 |
| 8 | 36 |
| 9 | 160 |
| 10 | 392 |
| 11 | 1496 |
| 12 | 1176 |
| 13 | 5664 |
| 14 | 14856 |
| 15 | 61560 |
| 16 | 5664 |
| 17 | 20520 |
| 18 | 102600 |
| 19 | 313464 |
| 20 | 123120 |
| 21 | 539184 |
| 22 | 1514952 |
| 23 | 5207160 |
| 24 | 3569088 |
| 25 | 15498360 |
| 26 | 43342056 |
| 27 | 164591976 |
| 28 | 145524528 |
| 29 | 682642512 |
| 30 | 1966450584 |
| 31 | 8092803816 |
| 32 | 1365285024 |