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 | 1 |
| 3 | 2 |
| 4 | 12 |
| 5 | 28 |
| 6 | 32 |
| 7 | 52 |
| 8 | 90 |
| 9 | 124 |
| 10 | 172 |
| 11 | 324 |
| 12 | 364 |
| 13 | 612 |
| 14 | 640 |
| 15 | 756 |
| 16 | 844 |
| 17 | 912 |
| 18 | 964 |
| 19 | 1476 |
| 20 | 2052 |
| 21 | 2484 |
| 22 | 3492 |
| 23 | 4356 |
| 24 | 4644 |
| 25 | 4804 |
| 26 | 6372 |
| 27 | 7620 |
| 28 | 8164 |
| 29 | 10116 |
| 30 | 11556 |
| 31 | 16452 |
| 32 | 20196 |
| 33 | 22212 |
| 34 | 26532 |
| 35 | 28980 |
| 36 | 33732 |
| 37 | 39780 |
| 38 | 41796 |
| 39 | 44676 |
| 40 | 55332 |
| 41 | 60516 |
| 42 | 63972 |
| 43 | 75204 |
| 44 | 82692 |