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) |
|---|---|
| 3 | 10 |
| 4 | 75 |
| 5 | 315 |
| 6 | 980 |
| 7 | 2520 |
| 8 | 5670 |
| 9 | 11550 |
| 10 | 21780 |
| 11 | 38610 |
| 12 | 65065 |
| 13 | 105105 |
| 14 | 163800 |
| 15 | 247520 |
| 16 | 364140 |
| 17 | 523260 |
| 18 | 736440 |
| 19 | 1017450 |
| 20 | 1382535 |
| 21 | 1850695 |
| 22 | 2443980 |
| 23 | 3187800 |
| 24 | 4111250 |
| 25 | 5247450 |
| 26 | 6633900 |
| 27 | 8312850 |
| 28 | 10331685 |
| 29 | 12743325 |
| 30 | 15606640 |
| 31 | 18986880 |
| 32 | 22956120 |
| 33 | 27593720 |
| 34 | 32986800 |
| 35 | 39230730 |