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 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 4 |
| 6 | 8 |
| 7 | 16 |
| 8 | 31 |
| 9 | 61 |
| 10 | 121 |
| 11 | 240 |
| 12 | 476 |
| 13 | 944 |
| 14 | 1872 |
| 15 | 3712 |
| 16 | 7362 |
| 17 | 14601 |
| 18 | 28958 |
| 19 | 57432 |
| 20 | 113904 |
| 21 | 225904 |
| 22 | 448034 |
| 23 | 888583 |
| 24 | 1762321 |
| 25 | 3495200 |
| 26 | 6932008 |
| 27 | 13748208 |
| 28 | 27266738 |
| 29 | 54077957 |
| 30 | 107252486 |
| 31 | 212713209 |
| 32 | 421872826 |
| 33 | 836697836 |
| 34 | 1659417786 |
| 35 | 3291113315 |
| 36 | 6527245245 |
| 37 | 12945446241 |
| 38 | 25674625681 |