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 | 0 |
| 5 | 0 |
| 6 | 1 |
| 7 | 3 |
| 8 | 11 |
| 9 | 31 |
| 10 | 93 |
| 11 | 248 |
| 12 | 670 |
| 13 | 1724 |
| 14 | 4434 |
| 15 | 11120 |
| 16 | 27772 |
| 17 | 68402 |
| 18 | 167695 |
| 19 | 407659 |
| 20 | 986955 |
| 21 | 2376323 |
| 22 | 5702352 |
| 23 | 13631753 |
| 24 | 32500113 |
| 25 | 77272919 |
| 26 | 183336571 |
| 27 | 434092838 |
| 28 | 1026096990 |
| 29 | 2421667040 |
| 30 | 5707720617 |
| 31 | 13436324063 |
| 32 | 31596325769 |