n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 4 |
3 | 16 |
4 | 64 |
5 | 256 |
6 | 1024 |
7 | 4096 |
8 | 16320 |
9 | 64512 |
10 | 252416 |
11 | 976896 |
12 | 3740928 |
13 | 14186496 |
14 | 53330944 |
15 | 198946816 |
16 | 737156096 |
17 | 2715254784 |
18 | 9949593600 |
19 | 36292198400 |
20 | 131845099520 |
21 | 477257695232 |
22 | 1722054197248 |
23 | 6195670220800 |
24 | 22233100238848 |
25 | 79595401641984 |
26 | 284344067424256 |
27 | 1013792167690240 |
[0,1,4,16,64,256,1024,4096,16320,64512,252416, 976896,3740928,14186496,53330944,198946816, 737156096,2715254784,9949593600,36292198400, 131845099520,477257695232,1722054197248, 6195670220800,22233100238848,79595401641984, 284344067424256,1013792167690240] |