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 | 2 |
| 2 | 3 |
| 3 | 7 |
| 4 | 23 |
| 5 | 41 |
| 6 | 71 |
| 7 | 191 |
| 8 | 409 |
| 9 | 2161 |
| 10 | 5881 |
| 11 | 36721 |
| 12 | 55441 |
| 13 | 71761 |
| 14 | 110881 |
| 15 | 760321 |
| 16 | 5109721 |
| 17 | 17551561 |
| 18 | 29418841 |
| 19 | 33358081 |
| 20 | 45024841 |
| 21 | 90441961 |
| 22 | 184254841 |
| 23 | 324013369 |
| 24 | 831143041 |
| 25 | 1685283601 |
| 26 | 6064561441 |
| 27 | 7111268641 |
| 28 | 9470788801 |
| 29 | 28725635761 |
| 30 | 108709927561 |
| 31 | 386681163961 |
| 32 | 1990614824641 |
| 33 | 44384069747161 |
| 34 | 89637484042681 |