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 | 4 |
| 3 | 48 |
| 4 | 204 |
| 5 | 580 |
| 6 | 1320 |
| 7 | 2604 |
| 8 | 4648 |
| 9 | 7704 |
| 10 | 12060 |
| 11 | 18040 |
| 12 | 26004 |
| 13 | 36348 |
| 14 | 49504 |
| 15 | 65940 |
| 16 | 86160 |
| 17 | 110704 |
| 18 | 140148 |
| 19 | 175104 |
| 20 | 216220 |
| 21 | 264180 |
| 22 | 319704 |
| 23 | 383548 |
| 24 | 456504 |
| 25 | 539400 |
| 26 | 633100 |
| 27 | 738504 |
| 28 | 856548 |
| 29 | 988204 |
| 30 | 1134480 |
| 31 | 1296420 |
| 32 | 1475104 |
| 33 | 1671648 |
| 34 | 1887204 |