A142606 - OEIS

A142606 as a simple table

n	a(n)
1	7
2	227
3	337
4	557
5	887
6	997
7	1217
8	1327
9	1657
10	1877
11	1987
12	2207
13	2647
14	3307
15	3527
16	3637
17	3967
18	4297
19	4517
20	4957
21	5507
22	6277
23	6607
24	6827
25	7487
26	7817
27	7927
28	8147
29	8807
30	9137
31	9467
32	9907
33	10457
34	10567
35	11117
36	11447
37	11777
38	11887
39	12107
40	12437
41	12547
42	13537

[7,227,337,557,887,997,1217,1327,1657,1877,1987, 2207,2647,3307,3527,3637,3967,4297,4517,4957,5507, 6277,6607,6827,7487,7817,7927,8147,8807,9137,9467, 9907,10457,10567,11117,11447,11777,11887,12107, 12437,12547,13537]