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 | 121 |
| 2 | 341 |
| 3 | 451 |
| 4 | 671 |
| 5 | 781 |
| 6 | 961 |
| 7 | 1111 |
| 8 | 1271 |
| 9 | 1331 |
| 10 | 1441 |
| 11 | 1661 |
| 12 | 1681 |
| 13 | 1891 |
| 14 | 1991 |
| 15 | 2101 |
| 16 | 2201 |
| 17 | 2321 |
| 18 | 2501 |
| 19 | 2651 |
| 20 | 2761 |
| 21 | 2911 |
| 22 | 2981 |
| 23 | 3091 |
| 24 | 3131 |
| 25 | 3421 |
| 26 | 3641 |
| 27 | 3721 |
| 28 | 3751 |
| 29 | 4061 |
| 30 | 4141 |
| 31 | 4331 |
| 32 | 4411 |
| 33 | 4631 |
| 34 | 4681 |
| 35 | 4741 |
| 36 | 4961 |
| 37 | 5041 |
| 38 | 5071 |
| 39 | 5371 |
| 40 | 5401 |
| 41 | 5611 |
| 42 | 5731 |
| 43 | 5921 |