A287291-OEIS公司

A287291号作为一个简单的表

n个	a（n）
0	1
1	2
2	0
三	0
4	24
5	48
6	64
7	128
8	32
9	64
10	1792
11	3584
12	7168
13	14336
14	28672
15	57344
16	116224
17	232448
18	462848
19	925696
20	1916928
21	3833856
22	7471104
23	14942208
24	27295744
25	54591488
26	101711872
27	203423744
28	268959744
29	537919488
30	838860800
31	1677721600
32	2164654080
33	4329308160

[1,2,0,0,24,48,64,128,32,64,1792,3584,7168,14336,28672,57344,116224,232448,462848,925696,1916928,3833856,7471104,14942208,27295744,54591488,101711872,203423744,268959744,537919488,838860800,1677721600,2164654080,4329308160]