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A186343 as a simple table

na(n)
12
24
36
49
511
614
716
819
921
1023
1126
1228
1331
1433
1535
1638
1740
1843
1945
2047
2150
2252
2355
2457
2560
2662
2764
2867
2969
3072
3174
3276
3379
3481
3584
3686
3789
3891
3993
4096
4198
42101
43103
44105
45108
46110
47113
48115
49117
50120
51122
52125
53127
54130
55132
56134
57137
58139
59142
60144
61146
62149
63151
64154
65156
66159
67161
68163
69166
70168
71171
72173
73175
74178
75180
76183
77185
78188
79190
80192
81195
82197
83200
84202
85204
86207

[2,4,6,9,11,14,16,19,21,23,26,28,31,33,35,38,40,
 43,45,47,50,52,55,57,60,62,64,67,69,72,74,76,79,
 81,84,86,89,91,93,96,98,101,103,105,108,110,113,
 115,117,120,122,125,127,130,132,134,137,139,142,
 144,146,149,151,154,156,159,161,163,166,168,171,
 173,175,178,180,183,185,188,190,192,195,197,200,
 202,204,207]