n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 64 |
3 | 960 |
4 | 14112 |
5 | 206976 |
6 | 3051520 |
7 | 45340672 |
8 | 679088128 |
9 | 10244538368 |
10 | 155497791488 |
11 | 2372333207552 |
12 | 36346971717632 |
13 | 558853784207360 |
14 | 8618409948348416 |
15 | 133250263847796736 |
16 | 2064775104923041792 |
17 | 32056922218818961408 |
18 | 498560128589437599744 |
[1,4,64,960,14112,206976,3051520,45340672, 679088128,10244538368,155497791488,2372333207552, 36346971717632,558853784207360,8618409948348416, 133250263847796736,2064775104923041792, 32056922218818961408,498560128589437599744] |