A039874 - OEIS

A039874 as a simple table

n	a(n)
1	0
2	1
3	1
4	1
5	2
6	4
7	3
8	6
9	8
10	11
11	16
12	21
13	24
14	37
15	46
16	62
17	78
18	101
19	126
20	166
21	208
22	266
23	326
24	414
25	508
26	640
27	793
28	978
29	1191
30	1473
31	1787
32	2211
33	2672
34	3236
35	3906
36	4736
37	5716
38	6902
39	8229
40	9861
41	11778
42	14137
43	16821
44	19976
45	23637

[0,1,1,1,2,4,3,6,8,11,16,21,24,37,46,62,78,101, 126,166,208,266,326,414,508,640,793,978,1191,1473, 1787,2211,2672,3236,3906,4736,5716,6902,8229,9861, 11778,14137,16821,19976,23637]