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 | 1 |
| 2 | 41 |
| 3 | 196 |
| 4 | 751 |
| 5 | 5570 |
| 6 | 33158 |
| 7 | 178469 |
| 8 | 1051514 |
| 9 | 6152761 |
| 10 | 35360059 |
| 11 | 204610794 |
| 12 | 1185387515 |
| 13 | 6858428469 |
| 14 | 39687403360 |
| 15 | 229672443463 |
| 16 | 1329125857816 |
| 17 | 7691795163442 |
| 18 | 44512304299166 |
| 19 | 257592990212772 |
| 20 | 1490702456602803 |