A171664 - OEIS

A171664 as a simple table

n	a(n)
1	4
2	6
3	9
4	14
5	18
6	21
7	27
8	57
9	69
10	77
11	141
12	155
13	161
14	194
15	261
16	381
17	428
18	551
19	579
20	620
21	626
22	671
23	672
24	704
25	720
26	755
27	1007
28	1349
29	1506
30	1529
31	1611
32	1659
33	1707
34	1710
35	1814
36	1982
37	1986
38	1994
39	2036
40	2037
41	2157
42	2429
43	2651
44	2714
45	2771
46	2783
47	2966
48	3039
49	3044
50	3101

[4,6,9,14,18,21,27,57,69,77,141,155,161,194,261, 381,428,551,579,620,626,671,672,704,720,755,1007, 1349,1506,1529,1611,1659,1707,1710,1814,1982,1986, 1994,2036,2037,2157,2429,2651,2714,2771,2783,2966, 3039,3044,3101]