A137558 - OEIS

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A137558 as a simple table

n	a(n)
1	49
2	69
3	109
4	149
5	229
6	269
7	349
8	389
9	469
10	589
11	629
12	749
13	829
14	869
15	949
16	1069
17	1189
18	1229
19	1349
20	1429
21	1469
22	1589
23	1669
24	1789
25	1949
26	2029
27	2069
28	2149
29	2189
30	2269

[49,69,109,149,229,269,349,389,469,589,629,749, 829,869,949,1069,1189,1229,1349,1429,1469,1589, 1669,1789,1949,2029,2069,2149,2189,2269]