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 | 1 |
| 2 | 6 |
| 3 | 28 |
| 4 | 40 |
| 5 | 240 |
| 6 | 544 |
| 7 | 832 |
| 8 | 1152 |
| 9 | 2816 |
| 10 | 50176 |
| 11 | 118784 |
| 12 | 131584 |
| 13 | 409600 |
| 14 | 1050624 |
| 15 | 1056768 |
| 16 | 1081344 |
| 17 | 2031616 |
| 18 | 8519680 |
| 19 | 118489088 |
| 20 | 201588736 |
| 21 | 352321536 |
| 22 | 6446645248 |
| 23 | 15300820992 |
| 24 | 25836912640 |
| 25 | 104152956928 |
| 26 | 150323855360 |
| 27 | 1099545182208 |
| 28 | 3315714752512 |
| 29 | 4398583382016 |