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 | 13 |
| 4 | 6 |
| 5 | 1 |
| 6 | 63 |
| 7 | 33 |
| 8 | 9 |
| 9 | 1 |
| 10 | 321 |
| 11 | 180 |
| 12 | 62 |
| 13 | 12 |
| 14 | 1 |
| 15 | 1683 |
| 16 | 985 |
| 17 | 390 |
| 18 | 100 |
| 19 | 15 |
| 20 | 1 |
| 21 | 8989 |
| 22 | 5418 |
| 23 | 2355 |
| 24 | 720 |
| 25 | 147 |
| 26 | 18 |
| 27 | 1 |
| 28 | 48639 |
| 29 | 29953 |
| 30 | 13923 |
| 31 | 4809 |
| 32 | 1197 |
| 33 | 203 |
| 34 | 21 |
| 35 | 1 |
| 36 | 265729 |
| 37 | 166344 |
| 38 | 81340 |
| 39 | 30744 |
| 40 | 8806 |
| 41 | 1848 |
| 42 | 268 |
| 43 | 24 |
| 44 | 1 |
| 45 | 1462563 |
| 46 | 927441 |
| 47 | 471852 |
| 48 | 191184 |
| 49 | 60858 |