A076731 - OEIS

A076731 as a simple table

n	a(n)
1	0
2	1
3	1
4	2
5	3
6	2
7	3
8	7
9	11
10	9
11	4
12	13
13	32
14	53
15	44
16	5
17	21
18	71
19	181
20	309
21	265
22	6
23	31
24	134
25	465
26	1214
27	2119
28	1854
29	7
30	43
31	227
32	1001
33	3539
34	9403
35	16687
36	14833
37	8
38	57
39	356
40	1909
41	8544
42	30637
43	82508
44	148329
45	133496
46	9
47	73
48	527
49	3333
50	18089
51	81901
52	296967
53	808393

[0,1,1,2,3,2,3,7,11,9,4,13,32,53,44,5,21,71,181, 309,265,6,31,134,465,1214,2119,1854,7,43,227,1001, 3539,9403,16687,14833,8,57,356,1909,8544,30637, 82508,148329,133496,9,73,527,3333,18089,81901, 296967,808393]