n | a(n) |
---|---|
1 | 4 |
2 | 16 |
3 | 64 |
4 | 248 |
5 | 944 |
6 | 3544 |
7 | 13168 |
8 | 48536 |
9 | 177776 |
10 | 647896 |
11 | 2351728 |
12 | 8508440 |
13 | 30701168 |
14 | 110537560 |
15 | 397266544 |
16 | 1425629336 |
17 | 5109684848 |
18 | 18295104472 |
19 | 65449056880 |
20 | 233970500888 |
21 | 835908980336 |
22 | 2984966034520 |
23 | 10654610339440 |
24 | 38017445912984 |
[4,16,64,248,944,3544,13168,48536,177776,647896, 2351728,8508440,30701168,110537560,397266544, 1425629336,5109684848,18295104472,65449056880, 233970500888,835908980336,2984966034520, 10654610339440,38017445912984] |