A007749 - OEIS

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A007749 as a simple table

n	a(n)
1	3
2	4
3	6
4	8
5	16
6	26
7	64
8	82
9	90
10	118
11	194
12	214
13	728
14	842
15	888
16	2328
17	3326
18	6404
19	8670
20	9682
21	27056
22	44318
23	76190
24	100654
25	145706

[3,4,6,8,16,26,64,82,90,118,194,214,728,842,888, 2328,3326,6404,8670,9682,27056,44318,76190,100654, 145706]