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 | 20 |
| 3 | 24 |
| 4 | 84 |
| 5 | 92 |
| 6 | 192 |
| 7 | 204 |
| 8 | 344 |
| 9 | 360 |
| 10 | 540 |
| 11 | 560 |
| 12 | 780 |
| 13 | 804 |
| 14 | 1064 |
| 15 | 1092 |
| 16 | 1392 |
| 17 | 1424 |
| 18 | 1764 |
| 19 | 1800 |
| 20 | 2180 |
| 21 | 2220 |
| 22 | 2640 |
| 23 | 2684 |
| 24 | 3144 |
| 25 | 3192 |
| 26 | 3692 |
| 27 | 3744 |
| 28 | 4284 |
| 29 | 4340 |
| 30 | 4920 |
| 31 | 4980 |
| 32 | 5600 |
| 33 | 5664 |
| 34 | 6324 |
| 35 | 6392 |
| 36 | 7092 |
| 37 | 7164 |
| 38 | 7904 |
| 39 | 7980 |
| 40 | 8760 |
| 41 | 8840 |
| 42 | 9660 |
| 43 | 9744 |
| 44 | 10604 |
| 45 | 10692 |