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 | 7 |
| 3 | 37 |
| 4 | 67 |
| 5 | 73 |
| 6 | 337 |
| 7 | 367 |
| 8 | 373 |
| 9 | 673 |
| 10 | 677 |
| 11 | 733 |
| 12 | 773 |
| 13 | 3373 |
| 14 | 3637 |
| 15 | 3673 |
| 16 | 3677 |
| 17 | 3733 |
| 18 | 3767 |
| 19 | 6337 |
| 20 | 6367 |
| 21 | 6373 |
| 22 | 6637 |
| 23 | 6673 |
| 24 | 6733 |
| 25 | 6737 |
| 26 | 6763 |
| 27 | 7333 |
| 28 | 7673 |
| 29 | 33377 |
| 30 | 33637 |
| 31 | 33767 |
| 32 | 33773 |
| 33 | 36373 |
| 34 | 36637 |
| 35 | 36677 |
| 36 | 36767 |
| 37 | 37337 |
| 38 | 37363 |
| 39 | 37633 |
| 40 | 37663 |
| 41 | 63337 |
| 42 | 63367 |
| 43 | 63377 |
| 44 | 63667 |