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 | 3 |
| 3 | 6 |
| 4 | 12 |
| 5 | 23 |
| 6 | 44 |
| 7 | 82 |
| 8 | 153 |
| 9 | 284 |
| 10 | 528 |
| 11 | 979 |
| 12 | 1816 |
| 13 | 3366 |
| 14 | 6241 |
| 15 | 11568 |
| 16 | 21444 |
| 17 | 39747 |
| 18 | 73676 |
| 19 | 136562 |
| 20 | 253129 |
| 21 | 469188 |
| 22 | 869672 |
| 23 | 1611987 |
| 24 | 2987920 |
| 25 | 5538286 |
| 26 | 10265553 |
| 27 | 19027816 |
| 28 | 35269212 |
| 29 | 65373603 |
| 30 | 121173924 |
| 31 | 224603162 |
| 32 | 416315513 |
| 33 | 771665884 |
| 34 | 1430329248 |
| 35 | 2651201459 |