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A270168 as a simple table

na(n)
01
15
28
320
420
532
648
768
876
980
1096
11116
12140
13176
14216
15268
16268
17288
18304
19292
20332
21352
22408
23444
24476
25512
26600
27588
28724
29792
30920
311020
321004
331104
341096
351068
361156
371136
381208
391244
401268
411328
421416
431364
441500
451608
461704
471796
481852
491936

[1,5,8,20,20,32,48,68,76,80,96,116,140,176,216,
 268,268,288,304,292,332,352,408,444,476,512,600,
 588,724,792,920,1020,1004,1104,1096,1068,1156,
 1136,1208,1244,1268,1328,1416,1364,1500,1608,1704,
 1796,1852,1936]