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) |
|---|---|
| 7 | 1 |
| 8 | 1 |
| 9 | 3 |
| 10 | 6 |
| 11 | 15 |
| 12 | 31 |
| 13 | 74 |
| 14 | 157 |
| 15 | 359 |
| 16 | 786 |
| 17 | 1766 |
| 18 | 3895 |
| 19 | 8710 |
| 20 | 19287 |
| 21 | 42987 |
| 22 | 95437 |
| 23 | 212468 |
| 24 | 472204 |
| 25 | 1050940 |
| 26 | 2337221 |
| 27 | 5201558 |
| 28 | 11573156 |
| 29 | 25759514 |
| 30 | 57332239 |
| 31 | 127633669 |
| 32 | 284148877 |
| 33 | 632704464 |
| 34 | 1408925270 |
| 35 | 3137861761 |
| 36 | 6989057709 |
| 37 | 15568767849 |
| 38 | 34684141315 |
| 39 | 77277619879 |