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 | 3 |
| 2 | 4 |
| 3 | 9 |
| 4 | 16 |
| 5 | 30 |
| 6 | 54 |
| 7 | 97 |
| 8 | 172 |
| 9 | 303 |
| 10 | 530 |
| 11 | 922 |
| 12 | 1596 |
| 13 | 2751 |
| 14 | 4724 |
| 15 | 8085 |
| 16 | 13796 |
| 17 | 23478 |
| 18 | 39858 |
| 19 | 67517 |
| 20 | 114140 |
| 21 | 192603 |
| 22 | 324454 |
| 23 | 545714 |
| 24 | 916536 |
| 25 | 1537275 |
| 26 | 2575204 |
| 27 | 4308897 |
| 28 | 7201912 |
| 29 | 12025038 |
| 30 | 20058990 |
| 31 | 33430297 |
| 32 | 55667596 |
| 33 | 92622471 |
| 34 | 153992954 |
| 35 | 255842890 |