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 | 0 |
| 3 | 1 |
| 4 | 1 |
| 5 | 2 |
| 6 | 4 |
| 7 | 7 |
| 8 | 13 |
| 9 | 24 |
| 10 | 42 |
| 11 | 76 |
| 12 | 137 |
| 13 | 245 |
| 14 | 441 |
| 15 | 792 |
| 16 | 1420 |
| 17 | 2550 |
| 18 | 4576 |
| 19 | 8209 |
| 20 | 14732 |
| 21 | 26433 |
| 22 | 47424 |
| 23 | 85092 |
| 24 | 152670 |
| 25 | 273914 |
| 26 | 491453 |
| 27 | 881744 |
| 28 | 1581985 |
| 29 | 2838333 |
| 30 | 5092398 |
| 31 | 9136528 |
| 32 | 16392311 |
| 33 | 29410243 |
| 34 | 52766343 |
| 35 | 94670652 |
| 36 | 169853138 |
| 37 | 304741614 |
| 38 | 546751437 |
| 39 | 980952673 |
| 40 | 1759973660 |