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 | 1 |
| 2 | 0 |
| 3 | 1 |
| 4 | 1 |
| 5 | 4 |
| 6 | 3 |
| 7 | 14 |
| 8 | 13 |
| 9 | 50 |
| 10 | 47 |
| 11 | 201 |
| 12 | 196 |
| 13 | 854 |
| 14 | 840 |
| 15 | 3839 |
| 16 | 3830 |
| 17 | 18001 |
| 18 | 17947 |
| 19 | 86471 |
| 20 | 86419 |
| 21 | 421989 |
| 22 | 421803 |
| 23 | 2079474 |
| 24 | 2079260 |
| 25 | 10306747 |
| 26 | 10305897 |
| 27 | 51263890 |
| 28 | 51263086 |
| 29 | 255514354 |
| 30 | 255510460 |
| 31 | 1275163904 |
| 32 | 1275160060 |
| 33 | 6368612099 |
| 34 | 6368594300 |
| 35 | 31821472593 |
| 36 | 31821454413 |