A140615 - OEIS

A140615 as a simple table

n	a(n)
1	13
2	61
3	109
4	277
5	349
6	373
7	541
8	613
9	733
10	853
11	877
12	997
13	1069
14	1117
15	1381
16	1429
17	1597
18	1669
19	1693
20	1789
21	1861
22	1933
23	2053
24	2221
25	2389
26	2437
27	2749
28	2917
29	3109
30	3181
31	3229
32	3253
33	3373
34	3517
35	3541
36	3637
37	3709
38	4021
39	4549
40	4597
41	4813
42	4861

[13,61,109,277,349,373,541,613,733,853,877,997, 1069,1117,1381,1429,1597,1669,1693,1789,1861,1933, 2053,2221,2389,2437,2749,2917,3109,3181,3229,3253, 3373,3517,3541,3637,3709,4021,4549,4597,4813,4861]