n | a(n) |
---|---|
1 | 4 |
2 | 16 |
3 | 128 |
4 | 448 |
5 | 2256 |
6 | 5376 |
7 | 29424 |
8 | 69888 |
9 | 302568 |
10 | 741376 |
11 | 3026448 |
12 | 7216896 |
13 | 29268352 |
14 | 65785216 |
15 | 263892736 |
16 | 591065568 |
17 | 2279452040 |
18 | 5195776064 |
19 | 19324558176 |
20 | 44442289024 |
21 | 161417689504 |
22 | 371206519136 |
23 | 1328055630144 |
24 | 3044451252064 |
25 | 10774811055304 |
26 | 24625495784320 |
27 | 86363375773808 |
28 | 197092099990080 |
[4,16,128,448,2256,5376,29424,69888,302568,741376, 3026448,7216896,29268352,65785216,263892736, 591065568,2279452040,5195776064,19324558176, 44442289024,161417689504,371206519136, 1328055630144,3044451252064,10774811055304, 24625495784320,86363375773808,197092099990080] |