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A337688 as a simple table

na(n)
160
284
3120
4140
5168
6180
7210
8240
9252
10264
11280
12300
13312
14336
15360
16420
17440
18480
19504
20520
21528
22540
23560
24588
25600
26616
27624
28630
29660
30672
31700
32720
33728
34756
35780
36792
37816
38840
39880
40900
41912
42924
43936
44960
45980
461008
471020
481040
491050
501056
511080
521092

[60,84,120,140,168,180,210,240,252,264,280,300,
 312,336,360,420,440,480,504,520,528,540,560,588,
 600,616,624,630,660,672,700,720,728,756,780,792,
 816,840,880,900,912,924,936,960,980,1008,1020,
 1040,1050,1056,1080,1092]