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A280270 as a simple table

na(n)
16
28
312
418
520
624
728
830
932
1036
1140
1242
1344
1448
1550
1652
1754
1856
1960
2064
2166
2270
2372
2480
2584
2688
2790
2896
29108
30112
31116
32120
33126
34132
35140
36144
37148
38150
39156
40160
41162
42168
43174
44176
45180
46186
47188
48192
49196
50198
51200
52204
53210
54216
55220
56224
57230
58232
59234
60240

[6,8,12,18,20,24,28,30,32,36,40,42,44,48,50,52,54,
 56,60,64,66,70,72,80,84,88,90,96,108,112,116,120,
 126,132,140,144,148,150,156,160,162,168,174,176,
 180,186,188,192,196,198,200,204,210,216,220,224,
 230,232,234,240]