n | a(n) |
---|---|
1 | 0 |
2 | 6 |
3 | 22 |
4 | 200 |
5 | 1732 |
6 | 14384 |
7 | 121696 |
8 | 1027464 |
9 | 8672840 |
10 | 73227432 |
11 | 618256792 |
12 | 5219942472 |
13 | 44072147576 |
14 | 372102417096 |
15 | 3141672058936 |
16 | 26525234659400 |
17 | 223953378903736 |
18 | 1890845334033992 |
19 | 15964465905002424 |
20 | 134788481690623048 |
[0,6,22,200,1732,14384,121696,1027464,8672840, 73227432,618256792,5219942472,44072147576, 372102417096,3141672058936,26525234659400, 223953378903736,1890845334033992, 15964465905002424,134788481690623048] |