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 | 1 |
| 3 | 4 |
| 4 | 5 |
| 5 | 1 |
| 6 | 18 |
| 7 | 29 |
| 8 | 12 |
| 9 | 1 |
| 10 | 120 |
| 11 | 218 |
| 12 | 119 |
| 13 | 22 |
| 14 | 1 |
| 15 | 840 |
| 16 | 1814 |
| 17 | 1285 |
| 18 | 345 |
| 19 | 35 |
| 20 | 1 |
| 21 | 7920 |
| 22 | 18144 |
| 23 | 14674 |
| 24 | 5205 |
| 25 | 805 |
| 26 | 51 |
| 27 | 1 |
| 28 | 75600 |
| 29 | 196356 |
| 30 | 185080 |
| 31 | 79219 |
| 32 | 16450 |
| 33 | 1624 |
| 34 | 70 |
| 35 | 1 |
| 36 | 887040 |
| 37 | 2427312 |
| 38 | 2515036 |
| 39 | 1258628 |
| 40 | 324569 |
| 41 | 43568 |
| 42 | 2954 |
| 43 | 92 |
| 44 | 1 |
| 45 | 10886400 |
| 46 | 32304240 |
| 47 | 37012572 |
| 48 | 21034376 |
| 49 | 6431733 |
| 50 | 1088409 |
| 51 | 101178 |
| 52 | 4974 |
| 53 | 117 |
| 54 | 1 |