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 | 4 |
| 5 | 33 |
| 6 | 140 |
| 7 | 424 |
| 8 | 1039 |
| 9 | 2213 |
| 10 | 4262 |
| 11 | 7606 |
| 12 | 12786 |
| 13 | 20482 |
| 14 | 31532 |
| 15 | 46952 |
| 16 | 67957 |
| 17 | 95983 |
| 18 | 132710 |
| 19 | 180086 |
| 20 | 240352 |
| 21 | 316068 |
| 22 | 410140 |
| 23 | 525848 |
| 24 | 666875 |
| 25 | 837337 |
| 26 | 1041814 |
| 27 | 1285382 |
| 28 | 1573646 |
| 29 | 1912774 |
| 30 | 2309532 |
| 31 | 2771320 |
| 32 | 3306209 |
| 33 | 3922979 |
| 34 | 4631158 |
| 35 | 5441062 |