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 | 0 |
| 1 | 0 |
| 2 | 3 |
| 3 | 18 |
| 4 | 60 |
| 5 | 150 |
| 6 | 315 |
| 7 | 588 |
| 8 | 1008 |
| 9 | 1620 |
| 10 | 2475 |
| 11 | 3630 |
| 12 | 5148 |
| 13 | 7098 |
| 14 | 9555 |
| 15 | 12600 |
| 16 | 16320 |
| 17 | 20808 |
| 18 | 26163 |
| 19 | 32490 |
| 20 | 39900 |
| 21 | 48510 |
| 22 | 58443 |
| 23 | 69828 |
| 24 | 82800 |
| 25 | 97500 |
| 26 | 114075 |
| 27 | 132678 |
| 28 | 153468 |
| 29 | 176610 |
| 30 | 202275 |
| 31 | 230640 |
| 32 | 261888 |
| 33 | 296208 |
| 34 | 333795 |
| 35 | 374850 |
| 36 | 419580 |
| 37 | 468198 |