A155764 - OEIS

A155764 as a simple table

n	a(n)
1	0
2	1
3	3
4	9
5	15
6	18
7	21
8	27
9	33
10	39
11	42
12	45
13	48
14	75
15	87
16	93
17	117
18	120
19	135
20	138
21	168
22	183
23	210
24	228
25	300
26	333
27	369
28	393
29	453
30	525
31	621
32	720
33	810
34	846
35	1086
36	1281
37	1305
38	1515
39	1590
40	1617
41	1722
42	1794
43	1833
44	1851
45	2010
46	2064
47	2085
48	2112
49	2217
50	2352
51	2754
52	2784

[0,1,3,9,15,18,21,27,33,39,42,45,48,75,87,93,117, 120,135,138,168,183,210,228,300,333,369,393,453, 525,621,720,810,846,1086,1281,1305,1515,1590,1617, 1722,1794,1833,1851,2010,2064,2085,2112,2217,2352, 2754,2784]