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 | 4440084513 |
| 2 | 5551770297 |
| 3 | 15588557967 |
| 4 | 16804701687 |
| 5 | 17271853617 |
| 6 | 18145113213 |
| 7 | 18453231933 |
| 8 | 28551366903 |
| 9 | 57156707667 |
| 10 | 61433605083 |
| 11 | 71440079091 |
| 12 | 72080670603 |
| 13 | 80244450939 |
| 14 | 85559974287 |
| 15 | 104463978483 |
| 16 | 133262909853 |
| 17 | 147857315253 |
| 18 | 221483397153 |
| 19 | 221924345793 |
| 20 | 222661558173 |
| 21 | 229451723637 |
| 22 | 229680831153 |
| 23 | 240429269013 |
| 24 | 257676075807 |
| 25 | 267398777427 |
| 26 | 286546347237 |
| 27 | 299932274193 |