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 | 49 |
| 10 | 46 |
| 11 | 186 |
| 12 | 181 |
| 13 | 714 |
| 14 | 700 |
| 15 | 2789 |
| 16 | 2780 |
| 17 | 11050 |
| 18 | 10997 |
| 19 | 43946 |
| 20 | 43895 |
| 21 | 175259 |
| 22 | 175088 |
| 23 | 700074 |
| 24 | 699875 |
| 25 | 2798246 |
| 26 | 2797536 |
| 27 | 11188856 |
| 28 | 11188191 |
| 29 | 44747434 |
| 30 | 44744591 |
| 31 | 178973354 |
| 32 | 178970560 |
| 33 | 715860463 |
| 34 | 715849600 |
| 35 | 2863377048 |
| 36 | 2863365834 |