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 | 1 |
| 2 | 1 |
| 3 | 3 |
| 4 | 7 |
| 5 | 15 |
| 6 | 32 |
| 7 | 68 |
| 8 | 144 |
| 9 | 302 |
| 10 | 633 |
| 11 | 1328 |
| 12 | 2783 |
| 13 | 5832 |
| 14 | 12219 |
| 15 | 25604 |
| 16 | 53648 |
| 17 | 112408 |
| 18 | 235529 |
| 19 | 493503 |
| 20 | 1034034 |
| 21 | 2166605 |
| 22 | 4539674 |
| 23 | 9511953 |
| 24 | 19930339 |
| 25 | 41759920 |
| 26 | 87499309 |
| 27 | 183336777 |
| 28 | 384144447 |
| 29 | 804895549 |
| 30 | 1686492803 |
| 31 | 3533698227 |
| 32 | 7404136642 |
| 33 | 15513842972 |
| 34 | 32506061868 |