A022471 - OEIS

A022471 as a simple table

n	a(n)
1	1
2	2
3	4
4	4
5	6
6	10
7	12
8	14
9	22
10	26
11	30
12	44
13	56
14	70
15	98
16	130
17	162
18	216
19	292
20	358
21	470
22	628
23	792
24	1050
25	1384
26	1788
27	2334
28	3072
29	3974
30	5162
31	6784
32	8786
33	11420
34	14992
35	19484
36	25388
37	33160
38	43262
39	56252
40	73392
41	95798
42	124496
43	162556
44	212048
45	275976
46	360154

[1,2,4,4,6,10,12,14,22,26,30,44,56,70,98,130,162, 216,292,358,470,628,792,1050,1384,1788,2334,3072, 3974,5162,6784,8786,11420,14992,19484,25388,33160, 43262,56252,73392,95798,124496,162556,212048, 275976,360154]