A274347 - OEIS

A274347 as a simple table

n	a(n)
1	12
2	21
3	28
4	33
5	44
6	54
7	72
8	77
9	87
10	116
11	126
12	141
13	188
14	198
15	203
16	228
17	304
18	319
19	329
20	369
21	492
22	517
23	522
24	532
25	597
26	796
27	836
28	846
29	861
30	966
31	1288
32	1353
33	1363
34	1368
35	1393
36	1563
37	2084
38	2189
39	2204
40	2214
41	2254
42	2529
43	3372
44	3542
45	3567
46	3572
47	3582
48	3647
49	4092

[12,21,28,33,44,54,72,77,87,116,126,141,188,198, 203,228,304,319,329,369,492,517,522,532,597,796, 836,846,861,966,1288,1353,1363,1368,1393,1563, 2084,2189,2204,2214,2254,2529,3372,3542,3567,3572, 3582,3647,4092]