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 | 10 |
| 2 | 45 |
| 3 | 120 |
| 4 | 220 |
| 5 | 342 |
| 6 | 570 |
| 7 | 960 |
| 8 | 1350 |
| 9 | 1640 |
| 10 | 2191 |
| 11 | 3240 |
| 12 | 4200 |
| 13 | 4720 |
| 14 | 5760 |
| 15 | 7920 |
| 16 | 9865 |
| 17 | 10620 |
| 18 | 11965 |
| 19 | 15600 |
| 20 | 19332 |
| 21 | 20550 |
| 22 | 22200 |
| 23 | 28080 |
| 24 | 34200 |
| 25 | 35582 |
| 26 | 37395 |
| 27 | 45720 |
| 28 | 54600 |
| 29 | 56970 |
| 30 | 59460 |
| 31 | 71040 |
| 32 | 84330 |
| 33 | 87090 |
| 34 | 88195 |
| 35 | 104040 |
| 36 | 123200 |
| 37 | 125710 |
| 38 | 126540 |
| 39 | 148560 |