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A072396 as a simple table

na(n)
13
28
36
420
518
612
730
854
924
1036
11138
1248
1384
1472
15108
1696
17210
18120
19276
20168
21216
22252
23288
24240
25336
26570
27384
28420
29360
30576
31480
32540
33504
34660
35600
36672
37990
38720
39792
40840
411152
421140

[3,8,6,20,18,12,30,54,24,36,138,48,84,72,108,96,
 210,120,276,168,216,252,288,240,336,570,384,420,
 360,576,480,540,504,660,600,672,990,720,792,840,
 1152,1140]