A034147 - OEIS

A034147 as a simple table

n	a(n)
0	1
1	1
2	1
3	2
4	2
5	3
6	4
7	5
8	6
9	8
10	10
11	12
12	15
13	18
14	22
15	27
16	32
17	38
18	45
19	52
20	61
21	71
22	82
23	94
24	108
25	123
26	140
27	159
28	179
29	201
30	226
31	252
32	280
33	311
34	343
35	378
36	416
37	455
38	497
39	542
40	588
41	637
42	689
43	742
44	797
45	856
46	914
47	975
48	1038
49	1101

[1,1,1,2,2,3,4,5,6,8,10,12,15,18,22,27,32,38,45, 52,61,71,82,94,108,123,140,159,179,201,226,252, 280,311,343,378,416,455,497,542,588,637,689,742, 797,856,914,975,1038,1101]