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 | 12 |
| 2 | 60 |
| 3 | 180 |
| 4 | 408 |
| 5 | 780 |
| 6 | 1332 |
| 7 | 2100 |
| 8 | 3120 |
| 9 | 4428 |
| 10 | 6060 |
| 11 | 8052 |
| 12 | 10440 |
| 13 | 13260 |
| 14 | 16548 |
| 15 | 20340 |
| 16 | 24672 |
| 17 | 29580 |
| 18 | 35100 |
| 19 | 41268 |
| 20 | 48120 |
| 21 | 55692 |
| 22 | 64020 |
| 23 | 73140 |
| 24 | 83088 |
| 25 | 93900 |
| 26 | 105612 |
| 27 | 118260 |
| 28 | 131880 |
| 29 | 146508 |
| 30 | 162180 |
| 31 | 178932 |
| 32 | 196800 |
| 33 | 215820 |
| 34 | 236028 |
| 35 | 257460 |
| 36 | 280152 |
| 37 | 304140 |
| 38 | 329460 |
| 39 | 356148 |
| 40 | 384240 |