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 | 0 |
| 1 | 0 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 2 |
| 6 | 4 |
| 7 | 8 |
| 8 | 17 |
| 9 | 37 |
| 10 | 82 |
| 11 | 185 |
| 12 | 423 |
| 13 | 978 |
| 14 | 2283 |
| 15 | 5373 |
| 16 | 12735 |
| 17 | 30372 |
| 18 | 72832 |
| 19 | 175502 |
| 20 | 424748 |
| 21 | 1032004 |
| 22 | 2516347 |
| 23 | 6155441 |
| 24 | 15101701 |
| 25 | 37150472 |
| 26 | 91618049 |
| 27 | 226460893 |
| 28 | 560954047 |
| 29 | 1392251012 |
| 30 | 3461824644 |
| 31 | 8622571758 |
| 32 | 21511212261 |
| 33 | 53745962199 |