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) |
|---|---|
| 3 | 1 |
| 4 | 1 |
| 5 | 3 |
| 6 | 6 |
| 7 | 12 |
| 8 | 23 |
| 9 | 47 |
| 10 | 92 |
| 11 | 189 |
| 12 | 401 |
| 13 | 869 |
| 14 | 1949 |
| 15 | 4475 |
| 16 | 10520 |
| 17 | 25183 |
| 18 | 61366 |
| 19 | 151555 |
| 20 | 379164 |
| 21 | 958555 |
| 22 | 2446746 |
| 23 | 6296819 |
| 24 | 16326996 |
| 25 | 42613240 |
| 26 | 111889355 |
| 27 | 295372835 |
| 28 | 783598713 |
| 29 | 2088175182 |
| 30 | 5587741350 |
| 31 | 15009229137 |
| 32 | 40458659246 |
| 33 | 109416872688 |
| 34 | 296810505298 |