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 | 0 |
| 1 | 0 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 1 |
| 6 | 4 |
| 7 | 1 |
| 8 | 8 |
| 9 | 3 |
| 10 | 17 |
| 11 | 1 |
| 12 | 56 |
| 13 | 1 |
| 14 | 134 |
| 15 | 18 |
| 16 | 440 |
| 17 | 1 |
| 18 | 1434 |
| 19 | 1 |
| 20 | 4758 |
| 21 | 135 |
| 22 | 16160 |
| 23 | 1 |
| 24 | 57254 |
| 25 | 16 |
| 26 | 200475 |
| 27 | 1387 |
| 28 | 718152 |
| 29 | 1 |
| 30 | 2591800 |
| 31 | 1 |
| 32 | 9398520 |
| 33 | 16161 |
| 34 | 34324175 |
| 35 | 148 |
| 36 | 126125330 |
| 37 | 1 |
| 38 | 465093572 |
| 39 | 200476 |
| 40 | 1723176740 |
| 41 | 1 |
| 42 | 6408642359 |
| 43 | 1 |
| 44 | 23910576236 |
| 45 | 2588402 |
| 46 | 89494164974 |
| 47 | 1 |
| 48 | 335923316982 |
| 49 | 133 |
| 50 | 1264107421202 |