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 | 3 |
| 2 | 9 |
| 3 | 10 |
| 4 | 44 |
| 5 | 110 |
| 6 | 136 |
| 7 | 592 |
| 8 | 884 |
| 9 | 2144 |
| 10 | 8384 |
| 11 | 18632 |
| 12 | 32896 |
| 13 | 116624 |
| 14 | 391612 |
| 15 | 527872 |
| 16 | 1090912 |
| 17 | 2102272 |
| 18 | 8394752 |
| 19 | 15370304 |
| 20 | 73995392 |
| 21 | 536920064 |
| 22 | 815634435 |
| 23 | 2147516416 |
| 24 | 34360131584 |
| 25 | 217898810368 |
| 26 | 546409576448 |
| 27 | 549759483904 |