A106978 - OEIS

A106978 as a simple table

n	a(n)
1	3
2	41
3	137
4	191
5	263
6	359
7	461
8	479
9	617
10	797
11	827
12	971
13	983
14	1229
15	1439
16	1481
17	1493
18	1613
19	1697
20	1721
21	1787
22	2099
23	2339
24	2381
25	2393
26	2531
27	2621
28	2729
29	2753
30	2939
31	2999
32	3347
33	3407
34	3449
35	3767
36	3797
37	3917
38	4139
39	4481
40	4493
41	4679
42	4889
43	5087

[3,41,137,191,263,359,461,479,617,797,827,971,983, 1229,1439,1481,1493,1613,1697,1721,1787,2099,2339, 2381,2393,2531,2621,2729,2753,2939,2999,3347,3407, 3449,3767,3797,3917,4139,4481,4493,4679,4889,5087]