A269891 - OEIS

A269891 as a simple table

n	a(n)
1	3
2	11
3	29
4	41
5	71
6	137
7	179
8	239
9	269
10	281
11	311
12	347
13	521
14	617
15	659
16	857
17	1019
18	1031
19	1061
20	1277
21	1319
22	1481
23	1487
24	1787
25	1871
26	1997
27	2027
28	2111
29	2129
30	2381
31	2549
32	3167
33	3251
34	3371
35	3539
36	3557
37	3581
38	3671
39	3767
40	3917
41	3929
42	4001
43	4019
44	4049
45	4091
46	4229
47	4337
48	4421
49	4481
50	4517
51	4547
52	4799
53	4967
54	5639
55	5657

[3,11,29,41,71,137,179,239,269,281,311,347,521, 617,659,857,1019,1031,1061,1277,1319,1481,1487, 1787,1871,1997,2027,2111,2129,2381,2549,3167,3251, 3371,3539,3557,3581,3671,3767,3917,3929,4001,4019, 4049,4091,4229,4337,4421,4481,4517,4547,4799,4967, 5639,5657]