A034345-OEIS公司

A034345号作为一个简单的表

n个	a（n）
1	0
2	0
三	0
4	1
5	4
6	11
7	27
8	63
9	134
10	276
11	544
12	1048
13	1956
14	3577
15	6395
16	11217
17	19307
18	32685
19	54413
20	89225
21	144144
22	229647
23	360975
24	560259
25	858967
26	1301757
27	1950955
28	2893102
29	4246868
30	6174084
31	8892966
32	12696295
33	17973092
34	25237467
35	35163431
36	48629902
37	66774760
38	91063984

[0,0,0,1,4,11,27,63,134,276,544,1048,1956,3577,6395,11217,19307,32685,54413,89225,144144,229647,360975,560259,858967,1301757,1950955,2893102,4246868,6174084,8892966,12696295,17973092,25237467,35163431,48629902,66774760,91063984]