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 | 1 |
| 3 | 1 |
| 4 | 3 |
| 5 | 1 |
| 6 | 9 |
| 7 | 1 |
| 8 | 5 |
| 9 | 3 |
| 10 | 27 |
| 11 | 1 |
| 12 | 25 |
| 13 | 1 |
| 14 | 81 |
| 15 | 9 |
| 16 | 7 |
| 17 | 1 |
| 18 | 15 |
| 19 | 1 |
| 20 | 125 |
| 21 | 27 |
| 22 | 243 |
| 23 | 1 |
| 24 | 49 |
| 25 | 3 |
| 26 | 729 |
| 27 | 5 |
| 28 | 625 |
| 29 | 1 |
| 30 | 75 |
| 31 | 1 |
| 32 | 11 |
| 33 | 81 |
| 34 | 2187 |
| 35 | 9 |
| 36 | 35 |
| 37 | 1 |
| 38 | 6561 |
| 39 | 243 |
| 40 | 343 |
| 41 | 1 |
| 42 | 375 |
| 43 | 1 |
| 44 | 3125 |
| 45 | 25 |
| 46 | 19683 |
| 47 | 1 |
| 48 | 121 |
| 49 | 3 |
| 50 | 45 |
| 51 | 729 |
| 52 | 15625 |
| 53 | 1 |
| 54 | 21 |
| 55 | 27 |
| 56 | 2401 |
| 57 | 2187 |
| 58 | 59049 |
| 59 | 1 |
| 60 | 245 |
| 61 | 1 |
| 62 | 177147 |
| 63 | 125 |
| 64 | 13 |
| 65 | 81 |
| 66 | 1875 |
| 67 | 1 |
| 68 | 78125 |
| 69 | 6561 |
| 70 | 225 |
| 71 | 1 |
| 72 | 77 |
| 73 | 1 |
| 74 | 531441 |
| 75 | 15 |
| 76 | 390625 |
| 77 | 9 |
| 78 | 9375 |
| 79 | 1 |
| 80 | 1331 |