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A263016 as a simple table

na(n)
120
224
340
448
560
680
796
8120
9140
10156
11160
12180
13192
14240
15260
16272
17280
18312
19320
20336
21340
22360
23384
24408
25420
26460
27468
28480
29520
30540
31544
32560
33580
34600
35624
36640
37672
38680
39696
40720
41740
42768
43780

[20,24,40,48,60,80,96,120,140,156,160,180,192,240,
 260,272,280,312,320,336,340,360,384,408,420,460,
 468,480,520,540,544,560,580,600,624,640,672,680,
 696,720,740,768,780]