n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 2 |
3 | 4 |
4 | 24 |
5 | 128 |
6 | 880 |
7 | 6816 |
8 | 60032 |
9 | 589312 |
10 | 6384384 |
11 | 75630080 |
12 | 972387328 |
13 | 13483769856 |
14 | 200571078656 |
15 | 3185540657152 |
16 | 53800242216960 |
17 | 962741176500224 |
18 | 18195808235880448 |
19 | 362183230599856128 |
20 | 7572922094360723456 |
21 | 165945771111208714240 |
22 | 3802923921298533384192 |
23 | 90965940197460917878784 |
24 | 2267151124921333646884864 |
[1,0,2,4,24,128,880,6816,60032,589312,6384384, 75630080,972387328,13483769856,200571078656, 3185540657152,53800242216960,962741176500224, 18195808235880448,362183230599856128, 7572922094360723456,165945771111208714240, 3802923921298533384192,90965940197460917878784, 2267151124921333646884864] |