n | a(n) |
---|---|
1 | 4 |
2 | 14 |
3 | 64 |
4 | 352 |
5 | 2192 |
6 | 14624 |
7 | 99880 |
8 | 699252 |
9 | 4971184 |
10 | 35792568 |
11 | 260301176 |
12 | 1908882592 |
13 | 14096303344 |
14 | 104715443852 |
15 | 781874941184 |
16 | 5864062367252 |
17 | 44152937528384 |
18 | 333599974922264 |
19 | 2528336632928152 |
20 | 19215358428046176 |
21 | 146402730743992960 |
22 | 1117984489446008100 |
[4,14,64,352,2192,14624,99880,699252,4971184, 35792568,260301176,1908882592,14096303344, 104715443852,781874941184,5864062367252, 44152937528384,333599974922264,2528336632928152, 19215358428046176,146402730743992960, 1117984489446008100] |