n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 8 |
4 | 60 |
5 | 624 |
6 | 7735 |
7 | 117648 |
8 | 2096640 |
9 | 43046640 |
10 | 999989991 |
11 | 25937424600 |
12 | 743008120140 |
13 | 23298085122480 |
14 | 793714765724595 |
15 | 29192926025339776 |
16 | 1152921504338411520 |
17 | 48661191875666868480 |
18 | 2185911559727674682148 |
19 | 104127350297911241532840 |
20 | 5242879999999487999992020 |
[1,1,8,60,624,7735,117648,2096640,43046640, 999989991,25937424600,743008120140,23298085122480, 793714765724595,29192926025339776, 1152921504338411520,48661191875666868480, 2185911559727674682148,104127350297911241532840, 5242879999999487999992020] |