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 | 24 |
| 4 | 72 |
| 5 | 160 |
| 6 | 300 |
| 7 | 504 |
| 8 | 784 |
| 9 | 1152 |
| 10 | 1620 |
| 11 | 2200 |
| 12 | 2904 |
| 13 | 3744 |
| 14 | 4732 |
| 15 | 5880 |
| 16 | 7200 |
| 17 | 8704 |
| 18 | 10404 |
| 19 | 12312 |
| 20 | 14440 |
| 21 | 16800 |
| 22 | 19404 |
| 23 | 22264 |
| 24 | 25392 |
| 25 | 28800 |
| 26 | 32500 |
| 27 | 36504 |
| 28 | 40824 |
| 29 | 45472 |
| 30 | 50460 |
| 31 | 55800 |
| 32 | 61504 |
| 33 | 67584 |
| 34 | 74052 |
| 35 | 80920 |
| 36 | 88200 |
| 37 | 95904 |
| 38 | 104044 |
| 39 | 112632 |
| 40 | 121680 |
| 41 | 131200 |