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 | 10 |
| 3 | 51 |
| 4 | 182 |
| 5 | 518 |
| 6 | 1260 |
| 7 | 2730 |
| 8 | 5412 |
| 9 | 9999 |
| 10 | 17446 |
| 11 | 29029 |
| 12 | 46410 |
| 13 | 71708 |
| 14 | 107576 |
| 15 | 157284 |
| 16 | 224808 |
| 17 | 314925 |
| 18 | 433314 |
| 19 | 586663 |
| 20 | 782782 |
| 21 | 1030722 |
| 22 | 1340900 |
| 23 | 1725230 |
| 24 | 2197260 |
| 25 | 2772315 |
| 26 | 3467646 |
| 27 | 4302585 |
| 28 | 5298706 |
| 29 | 6479992 |
| 30 | 7873008 |
| 31 | 9507080 |