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 | 2 |
| 2 | 3 |
| 3 | 6 |
| 4 | 14 |
| 5 | 21 |
| 6 | 42 |
| 7 | 93 |
| 8 | 186 |
| 9 | 381 |
| 10 | 651 |
| 11 | 1302 |
| 12 | 2667 |
| 13 | 5334 |
| 14 | 11811 |
| 15 | 23622 |
| 16 | 49146 |
| 17 | 82677 |
| 18 | 165354 |
| 19 | 344022 |
| 20 | 761763 |
| 21 | 1523526 |
| 22 | 2752491 |
| 23 | 5332341 |
| 24 | 10664682 |
| 25 | 21845397 |
| 26 | 43690794 |
| 27 | 85327221 |
| 28 | 170654442 |
| 29 | 341310837 |
| 30 | 677207307 |
| 31 | 1354414614 |
| 32 | 2796546858 |
| 33 | 6192353757 |
| 34 | 10836557067 |