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) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 4 |
| 5 | 8 |
| 6 | 15 |
| 7 | 27 |
| 8 | 51 |
| 9 | 93 |
| 10 | 174 |
| 11 | 329 |
| 12 | 620 |
| 13 | 1177 |
| 14 | 2250 |
| 15 | 4308 |
| 16 | 8286 |
| 17 | 15961 |
| 18 | 30871 |
| 19 | 59792 |
| 20 | 116083 |
| 21 | 225754 |
| 22 | 439666 |
| 23 | 857554 |
| 24 | 1674630 |
| 25 | 3273944 |
| 26 | 6407147 |
| 27 | 12550615 |
| 28 | 24605525 |
| 29 | 48277287 |
| 30 | 94790704 |
| 31 | 186242926 |
| 32 | 366153007 |
| 33 | 720274117 |
| 34 | 1417640576 |