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) |
|---|---|
| 9 | 9 |
| 10 | 0 |
| 11 | 0 |
| 12 | 0 |
| 13 | 0 |
| 14 | 0 |
| 15 | 0 |
| 16 | 0 |
| 17 | 0 |
| 18 | 306 |
| 19 | 684 |
| 20 | 760 |
| 21 | 840 |
| 22 | 924 |
| 23 | 1012 |
| 24 | 1104 |
| 25 | 1200 |
| 26 | 1300 |
| 27 | 19656 |
| 28 | 62748 |
| 29 | 138040 |
| 30 | 228810 |
| 31 | 336660 |
| 32 | 463264 |
| 33 | 610368 |
| 34 | 779790 |
| 35 | 973420 |
| 36 | 2736720 |
| 37 | 8346312 |
| 38 | 20967678 |
| 39 | 44830500 |
| 40 | 83049720 |
| 41 | 139206480 |
| 42 | 217387002 |
| 43 | 322222908 |
| 44 | 458932980 |
| 45 | 802030680 |
| 46 | 1795190940 |