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 | 0 |
| 2 | 1 |
| 3 | 0 |
| 4 | 1 |
| 5 | 0 |
| 6 | 1 |
| 7 | 0 |
| 8 | 3 |
| 9 | 1 |
| 10 | 6 |
| 11 | 2 |
| 12 | 16 |
| 13 | 8 |
| 14 | 42 |
| 15 | 28 |
| 16 | 112 |
| 17 | 93 |
| 18 | 311 |
| 19 | 295 |
| 20 | 869 |
| 21 | 939 |
| 22 | 2454 |
| 23 | 2931 |
| 24 | 7032 |
| 25 | 9036 |
| 26 | 20301 |
| 27 | 27701 |
| 28 | 58929 |
| 29 | 84413 |
| 30 | 172104 |
| 31 | 255919 |
| 32 | 504637 |
| 33 | 773511 |
| 34 | 1484392 |
| 35 | 2331180 |
| 36 | 4378773 |
| 37 | 7009288 |
| 38 | 12944347 |
| 39 | 21039961 |
| 40 | 38328890 |
| 41 | 63067623 |
| 42 | 113651785 |
| 43 | 188831922 |
| 44 | 337361112 |
| 45 | 564890985 |
| 46 | 1002268019 |
| 47 | 1688673026 |
| 48 | 2979703035 |
| 49 | 5045200597 |