A140881 - OEIS

A140881 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	16
13	20
14	25
15	32
16	41
17	52
18	65
19	83
20	104
21	132
22	166
23	210
24	265
25	335
26	422
27	533
28	673
29	849
30	1072
31	1353
32	1707
33	2154
34	2718
35	3430
36	4329
37	5462
38	6893
39	8698
40	10975
41	13850
42	17476
43	22053
44	27828
45	35115
46	44310
47	55913
48	70555
49	89030
50	112344

[1,1,1,2,2,3,4,5,6,8,10,12,16,20,25,32,41,52,65, 83,104,132,166,210,265,335,422,533,673,849,1072, 1353,1707,2154,2718,3430,4329,5462,6893,8698, 10975,13850,17476,22053,27828,35115,44310,55913, 70555,89030,112344]