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 | 1 |
| 4 | 2 |
| 5 | 4 |
| 6 | 8 |
| 7 | 16 |
| 8 | 33 |
| 9 | 67 |
| 10 | 141 |
| 11 | 295 |
| 12 | 630 |
| 13 | 1340 |
| 14 | 2895 |
| 15 | 6237 |
| 16 | 13596 |
| 17 | 29556 |
| 18 | 64846 |
| 19 | 141976 |
| 20 | 313131 |
| 21 | 689425 |
| 22 | 1527099 |
| 23 | 3377723 |
| 24 | 7508724 |
| 25 | 16671776 |
| 26 | 37175536 |
| 27 | 82809462 |
| 28 | 185141322 |
| 29 | 413555554 |
| 30 | 926743719 |
| 31 | 2075094083 |
| 32 | 4659549155 |
| 33 | 10455390287 |
| 34 | 23519366120 |
| 35 | 52872809784 |