A127780 - OEIS

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A127780 as a simple table

n	a(n)
1	1
2	3
3	6
4	5
5	10
6	15
7	7
8	14
9	21
10	28
11	9
12	18
13	27
14	36
15	45
16	11
17	22
18	33
19	44
20	55
21	66
22	13
23	26
24	39
25	52
26	65
27	78
28	91
29	15
30	30
31	45
32	60
33	75
34	90
35	105
36	120

[1,3,6,5,10,15,7,14,21,28,9,18,27,36,45,11,22,33, 44,55,66,13,26,39,52,65,78,91,15,30,45,60,75,90, 105,120]