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 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 1 |
| 7 | 0 |
| 8 | 3 |
| 9 | 1 |
| 10 | 11 |
| 11 | 0 |
| 12 | 39 |
| 13 | 0 |
| 14 | 118 |
| 15 | 12 |
| 16 | 395 |
| 17 | 0 |
| 18 | 1372 |
| 19 | 0 |
| 20 | 4601 |
| 21 | 119 |
| 22 | 15986 |
| 23 | 0 |
| 24 | 56662 |
| 25 | 11 |
| 26 | 199854 |
| 27 | 1337 |
| 28 | 716135 |
| 29 | 0 |
| 30 | 2589376 |
| 31 | 0 |
| 32 | 9391051 |
| 33 | 15987 |
| 34 | 34315811 |
| 35 | 129 |
| 36 | 126096824 |
| 37 | 0 |
| 38 | 465062362 |
| 39 | 199855 |
| 40 | 1723071186 |
| 41 | 0 |
| 42 | 6408523001 |
| 43 | 0 |
| 44 | 23910175807 |
| 45 | 2586090 |
| 46 | 89493721076 |