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 | 3 |
| 2 | 9 |
| 3 | 27 |
| 4 | 35 |
| 5 | 81 |
| 6 | 175 |
| 7 | 243 |
| 8 | 245 |
| 9 | 729 |
| 10 | 875 |
| 11 | 1045 |
| 12 | 1225 |
| 13 | 1715 |
| 14 | 2187 |
| 15 | 4375 |
| 16 | 5225 |
| 17 | 6125 |
| 18 | 6561 |
| 19 | 8575 |
| 20 | 11495 |
| 21 | 12005 |
| 22 | 19683 |
| 23 | 19855 |
| 24 | 21875 |
| 25 | 24871 |
| 26 | 26125 |
| 27 | 29029 |
| 28 | 30625 |
| 29 | 42875 |
| 30 | 50065 |
| 31 | 57475 |
| 32 | 58435 |
| 33 | 59049 |
| 34 | 60025 |
| 35 | 64285 |
| 36 | 84035 |
| 37 | 87685 |
| 38 | 99275 |
| 39 | 109375 |
| 40 | 126445 |
| 41 | 130625 |
| 42 | 137885 |
| 43 | 140335 |
| 44 | 153125 |