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 | 2 |
| 5 | 2 |
| 6 | 4 |
| 7 | 0 |
| 8 | 2 |
| 9 | 0 |
| 10 | 21 |
| 11 | 46 |
| 12 | 76 |
| 13 | 96 |
| 14 | 2 |
| 15 | 115 |
| 16 | 369 |
| 17 | 330 |
| 18 | 1804 |
| 19 | 481 |
| 20 | 330 |
| 21 | 8632 |
| 22 | 6184 |
| 23 | 18226 |
| 24 | 35100 |
| 25 | 42702 |
| 26 | 17098 |
| 27 | 108120 |
| 28 | 249950 |
| 29 | 342721 |
| 30 | 433224 |
| 31 | 1118854 |
| 32 | 760977 |
| 33 | 2881920 |
| 34 | 566378 |
| 35 | 4113707 |
| 36 | 2229460 |
| 37 | 2634351 |
| 38 | 19518945 |
| 39 | 48149442 |
| 40 | 41302415 |
| 41 | 97296382 |
| 42 | 35211640 |