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) |
|---|---|
| 17 | 4862 |
| 18 | 16796 |
| 19 | 41990 |
| 20 | 90440 |
| 21 | 177650 |
| 22 | 326876 |
| 23 | 572033 |
| 24 | 961400 |
| 25 | 1562275 |
| 26 | 2466750 |
| 27 | 3798795 |
| 28 | 5722860 |
| 29 | 8454225 |
| 30 | 12271350 |
| 31 | 17530500 |
| 32 | 24682944 |
| 33 | 34295052 |
| 34 | 47071640 |
| 35 | 63882940 |
| 36 | 85795600 |
| 37 | 114108148 |
| 38 | 150391384 |
| 39 | 196534195 |
| 40 | 254795320 |
| 41 | 327861625 |
| 42 | 418913482 |
| 43 | 531697881 |