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 | 2 |
| 8 | 6 |
| 9 | 12 |
| 10 | 22 |
| 11 | 39 |
| 12 | 66 |
| 13 | 103 |
| 14 | 159 |
| 15 | 243 |
| 16 | 352 |
| 17 | 510 |
| 18 | 721 |
| 19 | 1011 |
| 20 | 1391 |
| 21 | 1903 |
| 22 | 2557 |
| 23 | 3436 |
| 24 | 4549 |
| 25 | 5999 |
| 26 | 7824 |
| 27 | 10187 |
| 28 | 13132 |
| 29 | 16886 |
| 30 | 21544 |
| 31 | 27414 |
| 32 | 34657 |
| 33 | 43703 |
| 34 | 54797 |
| 35 | 68558 |
| 36 | 85328 |
| 37 | 105963 |
| 38 | 131028 |
| 39 | 161664 |
| 40 | 198710 |