A288305 - OEIS

A288305 as a simple table

n	a(n)
1	2
2	4
3	7
4	9
5	9
6	11
7	23
8	25
9	47
10	49
11	167
12	169
13	359
14	361
15	839
16	841
17	1367
18	1369
19	1847
20	1849
21	2207
22	2209
23	3719
24	3721
25	5039
26	5041
27	7919
28	7921
29	10607
30	10609
31	11447
32	11449
33	16127
34	16129
35	17159
36	17161
37	19319
38	19321
39	29927
40	29929
41	36479
42	36481
43	44519
44	44521

[2,4,7,9,9,11,23,25,47,49,167,169,359,361,839,841, 1367,1369,1847,1849,2207,2209,3719,3721,5039,5041, 7919,7921,10607,10609,11447,11449,16127,16129, 17159,17161,19319,19321,29927,29929,36479,36481, 44519,44521]