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 | 3 |
| 1 | 1 |
| 2 | 4 |
| 3 | 8 |
| 4 | 8 |
| 5 | 21 |
| 6 | 21 |
| 7 | 62 |
| 8 | 128 |
| 9 | 190 |
| 10 | 430 |
| 11 | 831 |
| 12 | 1451 |
| 13 | 3030 |
| 14 | 6143 |
| 15 | 12286 |
| 16 | 24361 |
| 17 | 48850 |
| 18 | 85497 |
| 19 | 134347 |
| 20 | 268694 |
| 21 | 583208 |
| 22 | 1071746 |
| 23 | 2192342 |
| 24 | 3264088 |
| 25 | 7514425 |
| 26 | 14042601 |
| 27 | 24821114 |
| 28 | 46378140 |
| 29 | 99867664 |
| 30 | 171066918 |
| 31 | 270934582 |
| 32 | 634625444 |
| 33 | 1272514976 |
| 34 | 2449009584 |
| 35 | 0 |
| 36 | 2449009584 |