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 | 34 |
| 9 | 75 |
| 10 | 166 |
| 11 | 370 |
| 12 | 841 |
| 13 | 1937 |
| 14 | 4488 |
| 15 | 10470 |
| 16 | 24617 |
| 17 | 58237 |
| 18 | 138435 |
| 19 | 330563 |
| 20 | 792745 |
| 21 | 1908379 |
| 22 | 4609434 |
| 23 | 11167781 |
| 24 | 27134824 |
| 25 | 66102921 |
| 26 | 161417867 |
| 27 | 395042562 |
| 28 | 968791315 |
| 29 | 2380383481 |
| 30 | 5859176855 |
| 31 | 14446043494 |
| 32 | 35672895787 |
| 33 | 88219204394 |
| 34 | 218466647493 |