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A348231 as a simple table

na(n)
01
18
216
328
432
548
648
768
864
988
1080
11108
1296
13128
14112
15148
16128
17168
18144
19188
20160
21208
22176
23228
24192
25248
26208
27268
28224
29288
30240
31308
32256
33328
34272
35348
36288
37368
38304
39388
40320
41408
42336
43428
44352
45448
46368
47468
48384
49488
50400
51508
52416
53528
54432

[1,8,16,28,32,48,48,68,64,88,80,108,96,128,112,
 148,128,168,144,188,160,208,176,228,192,248,208,
 268,224,288,240,308,256,328,272,348,288,368,304,
 388,320,408,336,428,352,448,368,468,384,488,400,
 508,416,528,432]