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 | 0 |
| 3 | 167016 |
| 4 | 2013360 |
| 5 | 8227752 |
| 6 | 21274896 |
| 7 | 43422072 |
| 8 | 76964016 |
| 9 | 124223214 |
| 10 | 187527168 |
| 11 | 269203674 |
| 12 | 371580528 |
| 13 | 496985526 |
| 14 | 647746464 |
| 15 | 826191138 |
| 16 | 1034647344 |
| 17 | 1275442878 |
| 18 | 1550905536 |
| 19 | 1863363114 |
| 20 | 2215143408 |
| 21 | 2608574214 |
| 22 | 3045983328 |