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 | 0 |
| 4 | 3096 |
| 5 | 44824 |
| 6 | 187924 |
| 7 | 505878 |
| 8 | 1044900 |
| 9 | 1847506 |
| 10 | 2912204 |
| 11 | 4254568 |
| 12 | 5853664 |
| 13 | 7715596 |
| 14 | 9827696 |
| 15 | 12192058 |
| 16 | 14805028 |
| 17 | 17667036 |
| 18 | 20777536 |
| 19 | 24136566 |
| 20 | 27744092 |
| 21 | 31600114 |
| 22 | 35704632 |
| 23 | 40057646 |
| 24 | 44659156 |
| 25 | 49509162 |
| 26 | 54607664 |
| 27 | 59954662 |
| 28 | 65550156 |