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 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 1 |
| 7 | 3 |
| 8 | 10 |
| 9 | 24 |
| 10 | 60 |
| 11 | 134 |
| 12 | 304 |
| 13 | 656 |
| 14 | 1420 |
| 15 | 2996 |
| 16 | 6312 |
| 17 | 13112 |
| 18 | 27167 |
| 19 | 55825 |
| 20 | 114412 |
| 21 | 233282 |
| 22 | 474563 |
| 23 | 962159 |
| 24 | 1947098 |
| 25 | 3931288 |
| 26 | 7925708 |
| 27 | 15952866 |
| 28 | 32072580 |
| 29 | 64404708 |
| 30 | 129213082 |
| 31 | 259009006 |
| 32 | 518818124 |
| 33 | 1038549912 |
| 34 | 2077775396 |
| 35 | 4154785904 |
| 36 | 8304424080 |