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A006638 as a simple table

n a(n)
1 2
2 4
3 8
4 12
5 16
6 20
7 26
8 32
9 40
10 44
11 54
12 64
13 72
14 80
15 92
16 104
17 116
18 128
19 140
20 152
21 164
22 180
23 196
24 212
25 228
26 244
27 262
28 280
29 298
30 316
31 338
32 360
33 382
34 404
35 426
36 448
37 470
38 492
39 514
40 536
41 562
42 588
43 614
44 644
45 674
46 704
47 734

[2,4,8,12,16,20,26,32,40,44,54,64,72,80,92,104,
 116,128,140,152,164,180,196,212,228,244,262,280,
 298,316,338,360,382,404,426,448,470,492,514,536,
 562,588,614,644,674,704,734]

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Last modified August 6 09:38 EDT 2020. Contains 336245 sequences. (Running on oeis4.)