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) |
|---|---|
| 1 | 0 |
| 2 | 2 |
| 3 | 4 |
| 4 | 6 |
| 5 | 8 |
| 6 | 64 |
| 7 | 20 |
| 8 | 24 |
| 9 | 68 |
| 10 | 642 |
| 11 | 42 |
| 12 | 46 |
| 13 | 86 |
| 14 | 420 |
| 15 | 202 |
| 16 | 424 |
| 17 | 242 |
| 18 | 464 |
| 19 | 246 |
| 20 | 468 |
| 21 | 646 |
| 22 | 864 |
| 23 | 686 |
| 24 | 868 |
| 25 | 6420 |
| 26 | 2020 |
| 27 | 2024 |
| 28 | 2420 |
| 29 | 2424 |
| 30 | 2464 |
| 31 | 2468 |
| 32 | 6424 |
| 33 | 6464 |
| 34 | 6468 |
| 35 | 6864 |
| 36 | 6868 |
| 37 | 64202 |
| 38 | 4202 |
| 39 | 4242 |
| 40 | 4246 |
| 41 | 4642 |
| 42 | 4646 |
| 43 | 4686 |
| 44 | 8642 |
| 45 | 42020 |
| 46 | 20202 |
| 47 | 42024 |
| 48 | 20242 |
| 49 | 42420 |