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 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 2 |
| 5 | 6 |
| 6 | 9 |
| 7 | 14 |
| 8 | 30 |
| 9 | 48 |
| 10 | 86 |
| 11 | 156 |
| 12 | 268 |
| 13 | 478 |
| 14 | 849 |
| 15 | 1486 |
| 16 | 2638 |
| 17 | 4660 |
| 18 | 8214 |
| 19 | 14532 |
| 20 | 25664 |
| 21 | 45304 |
| 22 | 80078 |
| 23 | 141412 |
| 24 | 249768 |
| 25 | 441276 |
| 26 | 779376 |
| 27 | 1376696 |
| 28 | 2431924 |
| 29 | 4295534 |
| 30 | 7587753 |
| 31 | 13403102 |
| 32 | 23674870 |
| 33 | 41819588 |
| 34 | 73870046 |
| 35 | 130483396 |
| 36 | 230486384 |
| 37 | 407130332 |
| 38 | 719153726 |