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) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 1 |
| 5 | 4 |
| 6 | 11 |
| 7 | 27 |
| 8 | 63 |
| 9 | 134 |
| 10 | 276 |
| 11 | 544 |
| 12 | 1048 |
| 13 | 1956 |
| 14 | 3577 |
| 15 | 6395 |
| 16 | 11217 |
| 17 | 19307 |
| 18 | 32685 |
| 19 | 54413 |
| 20 | 89225 |
| 21 | 144144 |
| 22 | 229647 |
| 23 | 360975 |
| 24 | 560259 |
| 25 | 858967 |
| 26 | 1301757 |
| 27 | 1950955 |
| 28 | 2893102 |
| 29 | 4246868 |
| 30 | 6174084 |
| 31 | 8892966 |
| 32 | 12696295 |
| 33 | 17973092 |
| 34 | 25237467 |
| 35 | 35163431 |
| 36 | 48629902 |
| 37 | 66774760 |
| 38 | 91063984 |