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) |
|---|---|
| 3 | 1 |
| 4 | 3 |
| 5 | 13 |
| 6 | 11 |
| 7 | 141 |
| 8 | 43 |
| 9 | 1485 |
| 10 | 171 |
| 11 | 15565 |
| 12 | 683 |
| 13 | 163021 |
| 14 | 2731 |
| 15 | 1707213 |
| 16 | 10923 |
| 17 | 17878221 |
| 18 | 43691 |
| 19 | 187223245 |
| 20 | 174763 |
| 21 | 1960627405 |
| 22 | 699051 |
| 23 | 20531956941 |
| 24 | 2796203 |
| 25 | 215013444813 |
| 26 | 11184811 |
| 27 | 2251650026701 |
| 28 | 44739243 |
| 29 | 23579585203405 |
| 30 | 178956971 |
| 31 | 246928622013645 |
| 32 | 715827883 |
| 33 | 2585870100909261 |
| 34 | 2863311531 |