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) |
|---|---|
| 3 | 1 |
| 4 | 3 |
| 5 | 1 |
| 6 | 9 |
| 7 | 4 |
| 8 | 1 |
| 9 | 27 |
| 10 | 14 |
| 11 | 5 |
| 12 | 1 |
| 13 | 81 |
| 14 | 46 |
| 15 | 19 |
| 16 | 6 |
| 17 | 1 |
| 18 | 243 |
| 19 | 162 |
| 20 | 65 |
| 21 | 24 |
| 22 | 7 |
| 23 | 1 |
| 24 | 729 |
| 25 | 574 |
| 26 | 247 |
| 27 | 84 |
| 28 | 29 |
| 29 | 8 |
| 30 | 1 |
| 31 | 2187 |
| 32 | 2042 |
| 33 | 955 |
| 34 | 332 |
| 35 | 103 |
| 36 | 34 |
| 37 | 9 |
| 38 | 1 |
| 39 | 6561 |
| 40 | 7270 |
| 41 | 3733 |
| 42 | 1336 |
| 43 | 417 |
| 44 | 122 |
| 45 | 39 |
| 46 | 10 |
| 47 | 1 |
| 48 | 19683 |
| 49 | 25890 |
| 50 | 14649 |
| 51 | 5478 |
| 52 | 1717 |
| 53 | 502 |
| 54 | 141 |
| 55 | 44 |
| 56 | 11 |
| 57 | 1 |