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 | 19 |
| 2 | 31 |
| 3 | 109 |
| 4 | 151 |
| 5 | 241 |
| 6 | 619 |
| 7 | 859 |
| 8 | 1489 |
| 9 | 1951 |
| 10 | 2131 |
| 11 | 2791 |
| 12 | 2971 |
| 13 | 3559 |
| 14 | 4129 |
| 15 | 4651 |
| 16 | 4789 |
| 17 | 4801 |
| 18 | 5659 |
| 19 | 6661 |
| 20 | 6781 |
| 21 | 7591 |
| 22 | 8221 |
| 23 | 8629 |
| 24 | 8821 |
| 25 | 8971 |
| 26 | 9241 |
| 27 | 9721 |
| 28 | 9931 |
| 29 | 10891 |
| 30 | 11971 |
| 31 | 12109 |
| 32 | 12541 |
| 33 | 13831 |
| 34 | 14011 |
| 35 | 15271 |
| 36 | 15289 |
| 37 | 15331 |
| 38 | 16831 |
| 39 | 17029 |
| 40 | 17419 |
| 41 | 17839 |
| 42 | 17989 |
| 43 | 18121 |
| 44 | 18541 |
| 45 | 20149 |
| 46 | 20899 |
| 47 | 21019 |