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A187085 as a simple table

na(n)
16
28
310
412
514
618
716
822
920
1026
1128
1224
1330
1434
1536
1632
1738
1842
1940
2046
2148
2250
2344
2454
2552
2658
2760
2856
2962
3066
3164
3270
3372
3478
3576
3684
3774
3868
3980
4086
4190
4282
4388
4496
4598
4692
47102
4894
49100
50106
51112
52114
53104
54110
55108
56120
57116
58126
59118
60130
61124
62132
63122
64140
65134
66138
67136
68142
69144
70146
71150
72148
73154
74156
75152
76162
77160
78168
79164
80158

[6,8,10,12,14,18,16,22,20,26,28,24,30,34,36,32,38,
 42,40,46,48,50,44,54,52,58,60,56,62,66,64,70,72,
 78,76,84,74,68,80,86,90,82,88,96,98,92,102,94,100,
 106,112,114,104,110,108,120,116,126,118,130,124,
 132,122,140,134,138,136,142,144,146,150,148,154,
 156,152,162,160,168,164,158]