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A320674 as a simple table

na(n)
12
24
36
48
510
612
716
820
924
1032
1140
1248
1364
1480
1596
16128
17160
18192
19256
20320
21384
22512
23640
24768
251024
261280
271536
282048
292560
303072
314096
325120
336144
348192
3510240
3612288
3716384
3820480
3924576
4032768
4140960
4249152
4365536
4481920
4598304
46131072
47163840
48196608

[2,4,6,8,10,12,16,20,24,32,40,48,64,80,96,128,160,
 192,256,320,384,512,640,768,1024,1280,1536,2048,
 2560,3072,4096,5120,6144,8192,10240,12288,16384,
 20480,24576,32768,40960,49152,65536,81920,98304,
 131072,163840,196608]