A066816 - OEIS

A066816 as a simple table

n	a(n)
0	1
1	1
2	1
3	2
4	3
5	4
6	6
7	8
8	10
9	15
10	20
11	25
12	36
13	46
14	58
15	78
16	95
17	120
18	160
19	198
20	249
21	318
22	392
23	485
24	608
25	745
26	914
27	1140
28	1390
29	1692
30	2092
31	2528
32	3032
33	3709
34	4468
35	5364
36	6494
37	7770
38	9279
39	11161
40	13347
41	15824
42	18920
43	22465
44	26539
45	31607
46	37345
47	43994
48	52016

[1,1,1,2,3,4,6,8,10,15,20,25,36,46,58,78,95,120, 160,198,249,318,392,485,608,745,914,1140,1390, 1692,2092,2528,3032,3709,4468,5364,6494,7770,9279, 11161,13347,15824,18920,22465,26539,31607,37345, 43994,52016]