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 | 0 |
| 2 | 30 |
| 3 | 114 |
| 4 | 252 |
| 5 | 444 |
| 6 | 690 |
| 7 | 990 |
| 8 | 1344 |
| 9 | 1752 |
| 10 | 2214 |
| 11 | 2730 |
| 12 | 3300 |
| 13 | 3924 |
| 14 | 4602 |
| 15 | 5334 |
| 16 | 6120 |
| 17 | 6960 |
| 18 | 7854 |
| 19 | 8802 |
| 20 | 9804 |
| 21 | 10860 |
| 22 | 11970 |
| 23 | 13134 |
| 24 | 14352 |
| 25 | 15624 |
| 26 | 16950 |
| 27 | 18330 |
| 28 | 19764 |
| 29 | 21252 |
| 30 | 22794 |
| 31 | 24390 |
| 32 | 26040 |
| 33 | 27744 |
| 34 | 29502 |
| 35 | 31314 |
| 36 | 33180 |
| 37 | 35100 |
| 38 | 37074 |
| 39 | 39102 |
| 40 | 41184 |
| 41 | 43320 |
| 42 | 45510 |
| 43 | 47754 |
| 44 | 50052 |
| 45 | 52404 |