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 | 2 |
| 3 | 4 |
| 4 | 6 |
| 5 | 10 |
| 6 | 15 |
| 7 | 16 |
| 8 | 22 |
| 9 | 30 |
| 10 | 66 |
| 11 | 70 |
| 12 | 103 |
| 13 | 210 |
| 14 | 261 |
| 15 | 1118 |
| 16 | 1625 |
| 17 | 2815 |
| 18 | 3081 |
| 19 | 3088 |
| 20 | 6693 |
| 21 | 18390 |
| 22 | 18762 |
| 23 | 32697 |
| 24 | 59860 |
| 25 | 71355 |
| 26 | 155165 |
| 27 | 198033 |
| 28 | 208790 |
| 29 | 262546 |
| 30 | 266403 |
| 31 | 673708 |
| 32 | 697924 |
| 33 | 699690 |
| 34 | 760750 |
| 35 | 1081782 |
| 36 | 2993838 |
| 37 | 4449916 |
| 38 | 4672993 |
| 39 | 4692381 |
| 40 | 5547049 |
| 41 | 6068616 |