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 | 3 |
| 6 | 1 |
| 7 | 6 |
| 8 | 9 |
| 9 | 15 |
| 10 | 34 |
| 11 | 63 |
| 12 | 114 |
| 13 | 206 |
| 14 | 386 |
| 15 | 725 |
| 16 | 1366 |
| 17 | 2601 |
| 18 | 4803 |
| 19 | 9144 |
| 20 | 17331 |
| 21 | 33106 |
| 22 | 63067 |
| 23 | 121112 |
| 24 | 233785 |
| 25 | 447721 |
| 26 | 860033 |
| 27 | 1659656 |
| 28 | 3200843 |
| 29 | 6188292 |
| 30 | 11966122 |
| 31 | 23175696 |
| 32 | 44928209 |
| 33 | 87187514 |
| 34 | 169331564 |
| 35 | 329134246 |