A181507 - OEIS

A181507 as a simple table

n	a(n)
1	3
2	11
3	17
4	37
5	43
6	151
7	173
8	191
9	223
10	233
11	367
12	401
13	421
14	433
15	449
16	457
17	509
18	787
19	839
20	1019
21	1061
22	1103
23	1123
24	1171
25	1187
26	1217
27	1237
28	1451
29	1663
30	1709
31	1723
32	1871
33	1901
34	1973
35	2251
36	2297
37	2351
38	2371
39	2753
40	3023
41	3121
42	3181
43	3217
44	3221
45	3319
46	3389
47	3391

[3,11,17,37,43,151,173,191,223,233,367,401,421, 433,449,457,509,787,839,1019,1061,1103,1123,1171, 1187,1217,1237,1451,1663,1709,1723,1871,1901,1973, 2251,2297,2351,2371,2753,3023,3121,3181,3217,3221, 3319,3389,3391]