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) |
|---|---|
| 4 | 2 |
| 5 | 0 |
| 6 | 0 |
| 7 | 2 |
| 8 | 10 |
| 9 | 12 |
| 10 | 22 |
| 11 | 60 |
| 12 | 76 |
| 13 | 160 |
| 14 | 292 |
| 15 | 652 |
| 16 | 1148 |
| 17 | 2600 |
| 18 | 3870 |
| 19 | 9152 |
| 20 | 13710 |
| 21 | 32792 |
| 22 | 48112 |
| 23 | 116624 |
| 24 | 171732 |
| 25 | 428064 |
| 26 | 589842 |
| 27 | 1496508 |
| 28 | 2069766 |
| 29 | 5348640 |
| 30 | 7164172 |
| 31 | 18742712 |
| 32 | 25160796 |
| 33 | 66758832 |
| 34 | 86664762 |
| 35 | 232553036 |
| 36 | 302742306 |
| 37 | 821495496 |
| 38 | 1044549008 |