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 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 2 |
| 6 | 4 |
| 7 | 7 |
| 8 | 12 |
| 9 | 21 |
| 10 | 38 |
| 11 | 70 |
| 12 | 130 |
| 13 | 243 |
| 14 | 457 |
| 15 | 865 |
| 16 | 1647 |
| 17 | 3152 |
| 18 | 6059 |
| 19 | 11693 |
| 20 | 22647 |
| 21 | 44007 |
| 22 | 85770 |
| 23 | 167626 |
| 24 | 328430 |
| 25 | 644993 |
| 26 | 1269413 |
| 27 | 2503339 |
| 28 | 4945897 |
| 29 | 9788700 |
| 30 | 19404866 |
| 31 | 38526335 |
| 32 | 76599502 |
| 33 | 152503123 |
| 34 | 304006284 |
| 35 | 606745700 |
| 36 | 1212335896 |
| 37 | 2424964327 |
| 38 | 4855454654 |