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 | 81 |
| 2 | 405 |
| 3 | 567 |
| 4 | 625 |
| 5 | 891 |
| 6 | 1053 |
| 7 | 1377 |
| 8 | 1539 |
| 9 | 1863 |
| 10 | 1875 |
| 11 | 2349 |
| 12 | 2401 |
| 13 | 2511 |
| 14 | 2835 |
| 15 | 2997 |
| 16 | 3321 |
| 17 | 3483 |
| 18 | 3807 |
| 19 | 4293 |
| 20 | 4375 |
| 21 | 4455 |
| 22 | 4779 |
| 23 | 4941 |
| 24 | 5265 |
| 25 | 5427 |
| 26 | 5751 |
| 27 | 5913 |
| 28 | 6237 |
| 29 | 6399 |
| 30 | 6723 |
| 31 | 6875 |
| 32 | 6885 |
| 33 | 7203 |
| 34 | 7209 |
| 35 | 7371 |
| 36 | 7695 |
| 37 | 7857 |
| 38 | 8125 |
| 39 | 8181 |
| 40 | 8343 |
| 41 | 8667 |
| 42 | 8829 |
| 43 | 9153 |
| 44 | 9315 |
| 45 | 9639 |