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) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 1 |
| 3 | 11 |
| 4 | 6 |
| 5 | 1 |
| 6 | 45 |
| 7 | 31 |
| 8 | 9 |
| 9 | 1 |
| 10 | 197 |
| 11 | 156 |
| 12 | 60 |
| 13 | 12 |
| 14 | 1 |
| 15 | 903 |
| 16 | 785 |
| 17 | 360 |
| 18 | 98 |
| 19 | 15 |
| 20 | 1 |
| 21 | 4279 |
| 22 | 3978 |
| 23 | 2061 |
| 24 | 684 |
| 25 | 145 |
| 26 | 18 |
| 27 | 1 |
| 28 | 20793 |
| 29 | 20335 |
| 30 | 11529 |
| 31 | 4403 |
| 32 | 1155 |
| 33 | 201 |
| 34 | 21 |
| 35 | 1 |
| 36 | 103049 |
| 37 | 104856 |
| 38 | 63728 |
| 39 | 27048 |
| 40 | 8270 |
| 41 | 1800 |
| 42 | 266 |
| 43 | 24 |
| 44 | 1 |
| 45 | 518859 |
| 46 | 545073 |
| 47 | 350136 |
| 48 | 161412 |
| 49 | 55458 |
| 50 | 14202 |