A020165 - OEIS

A020165 as a simple table

n	a(n)
1	4
2	6
3	9
4	12
5	18
6	28
7	36
8	45
9	57
10	66
11	133
12	171
13	217
14	246
15	268
16	285
17	301
18	396
19	451
20	469
21	561
22	589
23	685
24	801
25	817
26	1065
27	1105
28	1233
29	1273
30	1333
31	1387
32	1476
33	1653
34	1729
35	1876
36	1881
37	2044
38	2077
39	2413
40	2465
41	2501
42	2556
43	2706
44	2821
45	2881
46	3556
47	3565
48	3781
49	3913
50	4047

[4,6,9,12,18,28,36,45,57,66,133,171,217,246,268, 285,301,396,451,469,561,589,685,801,817,1065,1105, 1233,1273,1333,1387,1476,1653,1729,1876,1881,2044, 2077,2413,2465,2501,2556,2706,2821,2881,3556,3565, 3781,3913,4047]