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 | 23 |
| 2 | 131 |
| 3 | 191 |
| 4 | 911 |
| 5 | 1223 |
| 6 | 1451 |
| 7 | 1571 |
| 8 | 1823 |
| 9 | 3323 |
| 10 | 3671 |
| 11 | 3851 |
| 12 | 5651 |
| 13 | 6323 |
| 14 | 6791 |
| 15 | 7523 |
| 16 | 8291 |
| 17 | 9371 |
| 18 | 10223 |
| 19 | 12671 |
| 20 | 15731 |
| 21 | 16091 |
| 22 | 16823 |
| 23 | 25931 |
| 24 | 28751 |
| 25 | 29723 |
| 26 | 39191 |
| 27 | 43223 |
| 28 | 50591 |
| 29 | 53831 |
| 30 | 55823 |
| 31 | 60611 |
| 32 | 62723 |
| 33 | 64151 |
| 34 | 64871 |
| 35 | 68531 |
| 36 | 73823 |
| 37 | 77723 |
| 38 | 80111 |
| 39 | 87491 |
| 40 | 90023 |