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 | 1 |
| 1 | 2 |
| 2 | 14 |
| 3 | 70 |
| 4 | 126 |
| 5 | 270 |
| 6 | 438 |
| 7 | 630 |
| 8 | 790 |
| 9 | 958 |
| 10 | 1134 |
| 11 | 1542 |
| 12 | 1974 |
| 13 | 2430 |
| 14 | 2910 |
| 15 | 3414 |
| 16 | 3942 |
| 17 | 4494 |
| 18 | 5070 |
| 19 | 5670 |
| 20 | 6142 |
| 21 | 6622 |
| 22 | 7110 |
| 23 | 7606 |
| 24 | 8110 |
| 25 | 8622 |
| 26 | 9142 |
| 27 | 9670 |
| 28 | 10206 |
| 29 | 11406 |
| 30 | 12630 |
| 31 | 13878 |
| 32 | 15150 |
| 33 | 16446 |
| 34 | 17766 |
| 35 | 19110 |
| 36 | 20478 |
| 37 | 21870 |
| 38 | 23286 |
| 39 | 24726 |
| 40 | 26190 |
| 41 | 27678 |
| 42 | 29190 |