n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 10 |
4 | 56 |
5 | 496 |
6 | 4592 |
7 | 58240 |
8 | 753536 |
9 | 12428416 |
10 | 206700032 |
11 | 4194910720 |
12 | 85291222016 |
13 | 2054623707136 |
14 | 49390297628672 |
15 | 1376983620812800 |
16 | 38210541166493696 |
17 | 1209980100295622656 |
18 | 38070418025153626112 |
19 | 1349585751030491054080 |
20 | 47479274652991633227776 |
[1,1,2,10,56,496,4592,58240,753536,12428416, 206700032,4194910720,85291222016,2054623707136, 49390297628672,1376983620812800,38210541166493696, 1209980100295622656,38070418025153626112, 1349585751030491054080,47479274652991633227776] |