A346591 - OEIS

A346591 as a simple table

n	a(n)
1	4
2	6
3	9
4	18
5	25
6	27
7	54
8	108
9	129
10	171
11	231
12	327
13	649
14	703
15	871
16	1161
17	2223
18	2463
19	2919
20	3711
21	6171
22	10971
23	13255
24	17647
25	23529
26	26623
27	34239
28	35655
29	52527
30	77031
31	106239
32	142587
33	156159
34	216367
35	230631
36	410011
37	511935
38	626331
39	837799
40	1117065
41	1501353
42	1723519

[4,6,9,18,25,27,54,108,129,171,231,327,649,703, 871,1161,2223,2463,2919,3711,6171,10971,13255, 17647,23529,26623,34239,35655,52527,77031,106239, 142587,156159,216367,230631,410011,511935,626331, 837799,1117065,1501353,1723519]