n | a(n) |
---|---|
0 | 0 |
1 | 4 |
2 | 80 |
3 | 1408 |
4 | 23808 |
5 | 395264 |
6 | 6496256 |
7 | 106102784 |
8 | 1725759488 |
9 | 27987017728 |
10 | 452890460160 |
11 | 7316694892544 |
12 | 118053383700480 |
13 | 1902813588226048 |
14 | 30644438111879168 |
15 | 493182667873845248 |
16 | 7932561728196313088 |
17 | 127528427796392050688 |
18 | 2049363966872621416448 |
[0,4,80,1408,23808,395264,6496256,106102784, 1725759488,27987017728,452890460160,7316694892544, 118053383700480,1902813588226048, 30644438111879168,493182667873845248, 7932561728196313088,127528427796392050688, 2049363966872621416448] |