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) |
|---|---|
| 0 | 3 |
| 1 | 3 |
| 2 | 21 |
| 3 | 39 |
| 4 | 21 |
| 5 | 93 |
| 6 | 129 |
| 7 | 57 |
| 8 | 219 |
| 9 | 273 |
| 10 | 111 |
| 11 | 399 |
| 12 | 471 |
| 13 | 183 |
| 14 | 633 |
| 15 | 723 |
| 16 | 273 |
| 17 | 921 |
| 18 | 1029 |
| 19 | 381 |
| 20 | 1263 |
| 21 | 1389 |
| 22 | 507 |
| 23 | 1659 |
| 24 | 1803 |
| 25 | 651 |
| 26 | 2109 |
| 27 | 2271 |
| 28 | 813 |
| 29 | 2613 |
| 30 | 2793 |
| 31 | 993 |
| 32 | 3171 |
| 33 | 3369 |
| 34 | 1191 |
| 35 | 3783 |
| 36 | 3999 |
| 37 | 1407 |
| 38 | 4449 |
| 39 | 4683 |
| 40 | 1641 |
| 41 | 5169 |
| 42 | 5421 |
| 43 | 1893 |
| 44 | 5943 |
| 45 | 6213 |
| 46 | 2163 |
| 47 | 6771 |