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 | 6 |
| 2 | 30 |
| 3 | 84 |
| 4 | 90 |
| 5 | 132 |
| 6 | 5460 |
| 7 | 360 |
| 8 | 1530 |
| 9 | 7980 |
| 10 | 13860 |
| 11 | 8280 |
| 12 | 81900 |
| 13 | 1512 |
| 14 | 3480 |
| 15 | 114576 |
| 16 | 117810 |
| 17 | 1260 |
| 18 | 3838380 |
| 19 | 32760 |
| 20 | 568260 |
| 21 | 1191960 |
| 22 | 869400 |
| 23 | 236880 |
| 24 | 9746100 |
| 25 | 525096 |
| 26 | 629640 |
| 27 | 351120 |
| 28 | 198360 |
| 29 | 42480 |
| 30 | 1362881520 |
| 31 | 4324320 |
| 32 | 1093950 |
| 33 | 33008220 |
| 34 | 434700 |
| 35 | 843480 |
| 36 | 46233287100 |
| 37 | 102702600 |
| 38 | 1081080 |