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 | 0 |
| 4 | 2 |
| 5 | 5 |
| 6 | 9 |
| 7 | 14 |
| 8 | 22 |
| 9 | 36 |
| 10 | 60 |
| 11 | 99 |
| 12 | 161 |
| 13 | 260 |
| 14 | 420 |
| 15 | 680 |
| 16 | 1102 |
| 17 | 1785 |
| 18 | 2889 |
| 19 | 4674 |
| 20 | 7562 |
| 21 | 12236 |
| 22 | 19800 |
| 23 | 32039 |
| 24 | 51841 |
| 25 | 83880 |
| 26 | 135720 |
| 27 | 219600 |
| 28 | 355322 |
| 29 | 574925 |
| 30 | 930249 |
| 31 | 1505174 |
| 32 | 2435422 |
| 33 | 3940596 |
| 34 | 6376020 |
| 35 | 10316619 |
| 36 | 16692641 |
| 37 | 27009260 |
| 38 | 43701900 |
| 39 | 70711160 |
| 40 | 114413062 |
| 41 | 185124225 |