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A316291 as a simple table

na(n)
16
220
328
430
540
648
760
866
972
1080
1184
1288
1390
1496
15104
16120
17126
18132
19140
20144
21150
22156
23160
24168
25176
26180
27192
28196
29198
30200
31204
32208
33210
34216
35220
36224
37228
38234
39240
40252
41260
42264

[6,20,28,30,40,48,60,66,72,80,84,88,90,96,104,120,
 126,132,140,144,150,156,160,168,176,180,192,196,
 198,200,204,208,210,216,220,224,228,234,240,252,
 260,264]