A011768-OEIS公司

A011768号作为一个简单的表

n个	a（n）
1	0
2	1
三	1
4	1
5	1
6	2
7	三
8	6
9	7
10	16
11	21
12	43
13	63
14	129
15	203
16	404
17	685
18	1343
19	2385
20	4625
21	8492
22	16409
23	30735
24	59290
25	112530
26	217182
27	415620
28	803076
29	1545463
30	2990968
31	5778267
32	11201472
33	21702686
34	42140890
35	81830744
36	159139498
37	309590883
38	602935713
39	1174779333
40	2290915478

[0,1,1,1,1,2,3,6,7,16,21,43,63,129,203,404,685,1343,2385,4625,8492,16409,30735,59290,112530,217182,415620,803076,1545463,2990968,5778267,11201472,21702686,42140890,81830744,159139498,309590883,602935713,1174779333,2290915478]