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 | 3 |
| 3 | 4 |
| 4 | 7 |
| 5 | 39 |
| 6 | 46 |
| 7 | 85 |
| 8 | 131 |
| 9 | 478 |
| 10 | 5867 |
| 11 | 23946 |
| 12 | 29813 |
| 13 | 8103269 |
| 14 | 8133082 |
| 15 | 16236351 |
| 16 | 40605784 |
| 17 | 300476839 |
| 18 | 341082623 |
| 19 | 12238368644 |
| 20 | 73771294487 |
| 21 | 86009663131 |
| 22 | 847858262666 |
| 23 | 3477442713795 |
| 24 | 7802743690256 |
| 25 | 11280186404051 |
| 26 | 19082930094307 |
| 27 | 49446046592665 |
| 28 | 68528976686972 |