A199218 - OEIS

A199218 as a simple table

n	a(n)
1	3
2	7
3	13
4	31
5	29
6	59
7	53
8	113
9	109
10	103
11	233
12	227
13	211
14	193
15	499
16	491
17	487
18	461
19	457
20	431
21	421
22	419
23	409
24	401
25	389
26	1013
27	967
28	937
29	929
30	919
31	883
32	877
33	863
34	859
35	853
36	827
37	809
38	797
39	2039
40	2011
41	2003
42	1979
43	1949
44	1901
45	1879
46	1871
47	1823
48	1789
49	1783
50	1753
51	1699

[3,7,13,31,29,59,53,113,109,103,233,227,211,193, 499,491,487,461,457,431,421,419,409,401,389,1013, 967,937,929,919,883,877,863,859,853,827,809,797, 2039,2011,2003,1979,1949,1901,1879,1871,1823,1789, 1783,1753,1699]