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 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 4 |
| 5 | 8 |
| 6 | 16 |
| 7 | 50 |
| 8 | 100 |
| 9 | 200 |
| 10 | 344 |
| 11 | 688 |
| 12 | 1376 |
| 13 | 2402 |
| 14 | 4804 |
| 15 | 9608 |
| 16 | 16808 |
| 17 | 33616 |
| 18 | 67232 |
| 19 | 117650 |
| 20 | 235300 |
| 21 | 470600 |
| 22 | 823544 |
| 23 | 1647088 |
| 24 | 3294176 |
| 25 | 5764802 |
| 26 | 11529604 |
| 27 | 23059208 |
| 28 | 40353608 |
| 29 | 80707216 |
| 30 | 161414432 |
| 31 | 282475250 |
| 32 | 564950500 |
| 33 | 1129901000 |
| 34 | 1977326744 |
| 35 | 3954653488 |
| 36 | 7909306976 |