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 | 0 |
| 1 | 1 |
| 2 | 0 |
| 3 | 1 |
| 4 | 1 |
| 5 | 2 |
| 6 | 2 |
| 7 | 7 |
| 8 | 5 |
| 9 | 20 |
| 10 | 19 |
| 11 | 60 |
| 12 | 62 |
| 13 | 202 |
| 14 | 202 |
| 15 | 679 |
| 16 | 711 |
| 17 | 2304 |
| 18 | 2507 |
| 19 | 8046 |
| 20 | 8856 |
| 21 | 28434 |
| 22 | 31855 |
| 23 | 101288 |
| 24 | 115596 |
| 25 | 364710 |
| 26 | 421654 |
| 27 | 1323946 |
| 28 | 1549090 |
| 29 | 4836072 |
| 30 | 5724582 |
| 31 | 17771683 |
| 32 | 21250527 |
| 33 | 65653884 |
| 34 | 79227989 |
| 35 | 243639954 |
| 36 | 296543356 |
| 37 | 907841678 |
| 38 | 1113706887 |