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 | 0 |
| 1 | 2 |
| 2 | 6 |
| 3 | 24 |
| 4 | 80 |
| 5 | 210 |
| 6 | 462 |
| 7 | 896 |
| 8 | 1584 |
| 9 | 2610 |
| 10 | 4070 |
| 11 | 6072 |
| 12 | 8736 |
| 13 | 12194 |
| 14 | 16590 |
| 15 | 22080 |
| 16 | 28832 |
| 17 | 37026 |
| 18 | 46854 |
| 19 | 58520 |
| 20 | 72240 |
| 21 | 88242 |
| 22 | 106766 |
| 23 | 128064 |
| 24 | 152400 |
| 25 | 180050 |
| 26 | 211302 |
| 27 | 246456 |
| 28 | 285824 |
| 29 | 329730 |
| 30 | 378510 |
| 31 | 432512 |
| 32 | 492096 |
| 33 | 557634 |
| 34 | 629510 |
| 35 | 708120 |
| 36 | 793872 |