A045494 - OEIS

A045494 as a simple table

n	a(n)
1	1
2	1
3	1
4	3
5	3
6	11
7	13
8	13
9	17
10	23
11	23
12	73
13	101
14	103
15	103
16	111
17	113
18	113
19	117
20	123
21	123
22	173
23	323
24	373
25	1103
26	1103
27	1111
28	1113
29	1113
30	1117
31	1123
32	1123
33	1173
34	1323
35	1373
36	3323
37	3373
38	11373
39	13323
40	13373
41	17373
42	23323
43	23373
44	73373
45	101373
46	103323

[1,1,1,3,3,11,13,13,17,23,23,73,101,103,103,111, 113,113,117,123,123,173,323,373,1103,1103,1111, 1113,1113,1117,1123,1123,1173,1323,1373,3323,3373, 11373,13323,13373,17373,23323,23373,73373,101373, 103323]