A191177 - OEIS

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A191177 as a simple table

n	a(n)
1	1
2	3
3	9
4	21
5	27
6	33
7	75
8	81
9	99
10	105
11	129
12	183
13	237
14	243
15	291
16	297
17	315
18	321
19	387
20	393
21	417
22	513
23	669
24	723
25	729
26	885
27	891
28	939
29	945
30	963
31	969
32	1155
33	1161
34	1179
35	1185
36	1251
37	1257
38	1281

[1,3,9,21,27,33,75,81,99,105,129,183,237,243,291, 297,315,321,387,393,417,513,669,723,729,885,891, 939,945,963,969,1155,1161,1179,1185,1251,1257, 1281]