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 | 21 |
| 2 | 57 |
| 3 | 91 |
| 4 | 111 |
| 5 | 133 |
| 6 | 183 |
| 7 | 381 |
| 8 | 553 |
| 9 | 703 |
| 10 | 813 |
| 11 | 871 |
| 12 | 993 |
| 13 | 1057 |
| 14 | 1191 |
| 15 | 1261 |
| 16 | 1333 |
| 17 | 1561 |
| 18 | 1641 |
| 19 | 1807 |
| 20 | 1893 |
| 21 | 1981 |
| 22 | 2071 |
| 23 | 2257 |
| 24 | 2353 |
| 25 | 2653 |
| 26 | 2757 |
| 27 | 2863 |
| 28 | 3193 |
| 29 | 3661 |
| 30 | 4033 |
| 31 | 4291 |
| 32 | 4971 |
| 33 | 5257 |
| 34 | 5403 |
| 35 | 5853 |
| 36 | 6807 |
| 37 | 6973 |
| 38 | 7141 |
| 39 | 7311 |
| 40 | 7483 |
| 41 | 8373 |
| 42 | 8557 |
| 43 | 8743 |
| 44 | 9121 |
| 45 | 9313 |
| 46 | 9507 |
| 47 | 9703 |