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 | 1 |
| 1 | 9 |
| 2 | 17 |
| 3 | 41 |
| 4 | 49 |
| 5 | 113 |
| 6 | 137 |
| 7 | 249 |
| 8 | 257 |
| 9 | 321 |
| 10 | 385 |
| 11 | 577 |
| 12 | 601 |
| 13 | 793 |
| 14 | 905 |
| 15 | 1321 |
| 16 | 1329 |
| 17 | 1393 |
| 18 | 1457 |
| 19 | 1649 |
| 20 | 1713 |
| 21 | 2225 |
| 22 | 2417 |
| 23 | 3313 |
| 24 | 3337 |
| 25 | 3529 |
| 26 | 3721 |
| 27 | 4297 |
| 28 | 4409 |
| 29 | 5305 |
| 30 | 5721 |
| 31 | 7449 |
| 32 | 7457 |
| 33 | 7521 |
| 34 | 7585 |
| 35 | 7777 |
| 36 | 7841 |
| 37 | 8353 |
| 38 | 8545 |
| 39 | 9441 |
| 40 | 9505 |
| 41 | 10017 |
| 42 | 10529 |
| 43 | 12065 |