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A349521 as a simple table

na(n)
14
216
320
428
532
636
744
848
952
1064
1168
1272
1376
1492
15100
16108
17112
18116
19124
20140
21144
22148
23160
24164
25172
26176
27180
28188
29192
30196
31208
32212
33216
34220
35224
36236
37240
38244
39252
40256
41260
42268
43272
44284
45292
46304
47308
48316
49320
50332
51336
52340
53352
54356
55360
56364
57368
58380
59388
60396
61400

[4,16,20,28,32,36,44,48,52,64,68,72,76,92,100,108,
 112,116,124,140,144,148,160,164,172,176,180,188,
 192,196,208,212,216,220,224,236,240,244,252,256,
 260,268,272,284,292,304,308,316,320,332,336,340,
 352,356,360,364,368,380,388,396,400]