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) |
|---|---|
| 2 | 0 |
| 3 | 2 |
| 4 | 4 |
| 5 | 10 |
| 6 | 14 |
| 7 | 16 |
| 8 | 28 |
| 9 | 58 |
| 10 | 86 |
| 11 | 104 |
| 12 | 124 |
| 13 | 518 |
| 14 | 604 |
| 15 | 1276 |
| 16 | 2200 |
| 17 | 2278 |
| 18 | 3214 |
| 19 | 4250 |
| 20 | 4420 |
| 21 | 9686 |
| 22 | 9938 |
| 23 | 11210 |
| 24 | 19934 |
| 25 | 21698 |
| 26 | 23206 |
| 27 | 44494 |
| 28 | 86240 |
| 29 | 110500 |
| 30 | 132046 |
| 31 | 216088 |
| 32 | 756836 |
| 33 | 859430 |
| 34 | 1257784 |
| 35 | 1398266 |
| 36 | 2976218 |
| 37 | 3021374 |
| 38 | 6972590 |
| 39 | 13466914 |
| 40 | 20996008 |
| 41 | 24036580 |
| 42 | 25964948 |