n | a(n) |
---|---|
1 | 56 |
2 | 236 |
3 | 976 |
4 | 4064 |
5 | 16880 |
6 | 70176 |
7 | 291648 |
8 | 1212224 |
9 | 5038336 |
10 | 20941056 |
11 | 87037696 |
12 | 361757184 |
13 | 1503580160 |
14 | 6249368576 |
15 | 25974407168 |
16 | 107958083584 |
17 | 448708898816 |
18 | 1864980094976 |
19 | 7751463714816 |
20 | 32217603784704 |
21 | 133906837667840 |
[56,236,976,4064,16880,70176,291648,1212224, 5038336,20941056,87037696,361757184,1503580160, 6249368576,25974407168,107958083584,448708898816, 1864980094976,7751463714816,32217603784704, 133906837667840] |