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) |
|---|---|
| 0 | 6 |
| 1 | 7 |
| 2 | 13 |
| 3 | 20 |
| 4 | 53 |
| 5 | 73 |
| 6 | 126 |
| 7 | 199 |
| 8 | 2514 |
| 9 | 2713 |
| 10 | 5227 |
| 11 | 7940 |
| 12 | 21107 |
| 13 | 29047 |
| 14 | 50154 |
| 15 | 79201 |
| 16 | 1000566 |
| 17 | 1079767 |
| 18 | 2080333 |
| 19 | 3160100 |
| 20 | 8400533 |
| 21 | 11560633 |
| 22 | 19961166 |
| 23 | 31521799 |
| 24 | 398222754 |
| 25 | 429744553 |
| 26 | 827967307 |
| 27 | 1257711860 |