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 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 1 |
| 5 | 3 |
| 6 | 3 |
| 7 | 10 |
| 8 | 11 |
| 9 | 30 |
| 10 | 48 |
| 11 | 114 |
| 12 | 166 |
| 13 | 486 |
| 14 | 727 |
| 15 | 1643 |
| 16 | 3193 |
| 17 | 7619 |
| 18 | 12489 |
| 19 | 30781 |
| 20 | 52007 |
| 21 | 123418 |
| 22 | 248386 |
| 23 | 520902 |
| 24 | 909701 |
| 25 | 2349536 |
| 26 | 4417148 |
| 27 | 9055904 |
| 28 | 18451951 |
| 29 | 41215779 |
| 30 | 77052793 |
| 31 | 186393151 |
| 32 | 350380117 |
| 33 | 769533521 |