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 | 9 |
| 3 | 18 |
| 4 | 81 |
| 5 | 36 |
| 6 | 162 |
| 7 | 54 |
| 8 | 729 |
| 9 | 324 |
| 10 | 324 |
| 11 | 90 |
| 12 | 1458 |
| 13 | 108 |
| 14 | 486 |
| 15 | 648 |
| 16 | 6561 |
| 17 | 144 |
| 18 | 2916 |
| 19 | 162 |
| 20 | 2916 |
| 21 | 972 |
| 22 | 810 |
| 23 | 198 |
| 24 | 13122 |
| 25 | 1296 |
| 26 | 972 |
| 27 | 5832 |
| 28 | 4374 |
| 29 | 252 |
| 30 | 5832 |
| 31 | 270 |
| 32 | 59049 |
| 33 | 1620 |
| 34 | 1296 |
| 35 | 1944 |
| 36 | 26244 |
| 37 | 324 |
| 38 | 1458 |
| 39 | 1944 |
| 40 | 26244 |
| 41 | 360 |
| 42 | 8748 |
| 43 | 378 |
| 44 | 7290 |
| 45 | 11664 |
| 46 | 1782 |
| 47 | 414 |
| 48 | 118098 |