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 | 1 |
| 4 | 1 |
| 5 | 5 |
| 6 | 4 |
| 7 | 14 |
| 8 | 21 |
| 9 | 43 |
| 10 | 91 |
| 11 | 165 |
| 12 | 354 |
| 13 | 676 |
| 14 | 1373 |
| 15 | 2741 |
| 16 | 5445 |
| 17 | 10965 |
| 18 | 21808 |
| 19 | 43738 |
| 20 | 87381 |
| 21 | 174735 |
| 22 | 349647 |
| 23 | 698901 |
| 24 | 1398318 |
| 25 | 2796080 |
| 26 | 5592445 |
| 27 | 11185081 |
| 28 | 22369145 |
| 29 | 44740069 |
| 30 | 89477724 |
| 31 | 178957606 |
| 32 | 357914197 |
| 33 | 715826739 |
| 34 | 1431658435 |
| 35 | 2863308229 |
| 36 | 5726626746 |