n | a(n) |
---|---|
10 | 1 |
11 | 55 |
12 | 2145 |
13 | 75790 |
14 | 2637635 |
15 | 93783690 |
16 | 3467403940 |
17 | 134463763720 |
18 | 5491244257785 |
19 | 236503301350745 |
20 | 10742799174110575 |
21 | 514243815022230930 |
22 | 25908948794088640280 |
23 | 1371861202568610407885 |
24 | 76216658109172817448960 |
25 | 4435598473883166992187500 |
26 | 269963484584876515488140800 |
[1,55,2145,75790,2637635,93783690,3467403940, 134463763720,5491244257785,236503301350745, 10742799174110575,514243815022230930, 25908948794088640280,1371861202568610407885, 76216658109172817448960,4435598473883166992187500, 269963484584876515488140800] |