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 | 2 |
| 3 | 4 |
| 4 | 8 |
| 5 | 16 |
| 6 | 31 |
| 7 | 60 |
| 8 | 116 |
| 9 | 227 |
| 10 | 441 |
| 11 | 859 |
| 12 | 1674 |
| 13 | 3260 |
| 14 | 6349 |
| 15 | 12367 |
| 16 | 24088 |
| 17 | 46916 |
| 18 | 91380 |
| 19 | 177984 |
| 20 | 346666 |
| 21 | 675214 |
| 22 | 1315136 |
| 23 | 2561536 |
| 24 | 4989191 |
| 25 | 9717617 |
| 26 | 18927334 |
| 27 | 36865412 |