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 | 1 |
| 4 | 21 |
| 5 | 179 |
| 6 | 513 |
| 7 | 1471 |
| 8 | 2736 |
| 9 | 5713 |
| 10 | 8881 |
| 11 | 15478 |
| 12 | 21961 |
| 13 | 34355 |
| 14 | 45696 |
| 15 | 66768 |
| 16 | 84922 |
| 17 | 117621 |
| 18 | 145313 |
| 19 | 193283 |
| 20 | 232787 |
| 21 | 300764 |
| 22 | 355093 |
| 23 | 447181 |
| 24 | 520412 |
| 25 | 641801 |
| 26 | 736900 |
| 27 | 894222 |
| 28 | 1015173 |
| 29 | 1213646 |
| 30 | 1366103 |
| 31 | 1612366 |
| 32 | 1799756 |
| 33 | 2102572 |
| 34 | 2329955 |
| 35 | 2695421 |
| 36 | 2970037 |
| 37 | 3406356 |