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) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 2 |
| 3 | 1 |
| 4 | 12 |
| 5 | 10 |
| 6 | 59 |
| 7 | 52 |
| 8 | 276 |
| 9 | 349 |
| 10 | 1404 |
| 11 | 1984 |
| 12 | 7019 |
| 13 | 11148 |
| 14 | 35686 |
| 15 | 62181 |
| 16 | 182776 |
| 17 | 339350 |
| 18 | 942507 |
| 19 | 1841208 |
| 20 | 4887096 |
| 21 | 9921685 |
| 22 | 25442304 |
| 23 | 53190380 |
| 24 | 132928715 |
| 25 | 284198328 |
| 26 | 696276202 |
| 27 | 1514363221 |
| 28 | 3654567764 |
| 29 | 8053235650 |
| 30 | 19212546163 |
| 31 | 42762014028 |
| 32 | 101125071372 |