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 | 1 |
| 4 | 1 |
| 5 | 2 |
| 6 | 1 |
| 7 | 1 |
| 8 | 3 |
| 9 | 6 |
| 10 | 1 |
| 11 | 1 |
| 12 | 3 |
| 13 | 13 |
| 14 | 24 |
| 15 | 1 |
| 16 | 1 |
| 17 | 3 |
| 18 | 16 |
| 19 | 75 |
| 20 | 120 |
| 21 | 1 |
| 22 | 1 |
| 23 | 3 |
| 24 | 16 |
| 25 | 109 |
| 26 | 541 |
| 27 | 720 |
| 28 | 1 |
| 29 | 1 |
| 30 | 3 |
| 31 | 16 |
| 32 | 125 |
| 33 | 918 |
| 34 | 4683 |
| 35 | 5040 |
| 36 | 1 |
| 37 | 1 |
| 38 | 3 |
| 39 | 16 |
| 40 | 125 |
| 41 | 1171 |
| 42 | 9277 |
| 43 | 47293 |
| 44 | 40320 |
| 45 | 1 |
| 46 | 1 |
| 47 | 3 |
| 48 | 16 |
| 49 | 125 |
| 50 | 1296 |
| 51 | 12965 |
| 52 | 109438 |
| 53 | 545835 |
| 54 | 362880 |
| 55 | 1 |
| 56 | 1 |
| 57 | 3 |
| 58 | 16 |
| 59 | 125 |
| 60 | 1296 |
| 61 | 15511 |
| 62 | 166836 |
| 63 | 1475691 |
| 64 | 7087261 |
| 65 | 3628800 |