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A186329 as a simple table

na(n)
12
24
36
48
510
612
714
817
919
1021
1123
1225
1327
1430
1532
1634
1736
1838
1940
2042
2145
2247
2349
2451
2553
2655
2758
2860
2962
3064
3166
3268
3370
3473
3575
3677
3779
3881
3983
4086
4188
4290
4392
4494
4596
4698
47101
48103
49105
50107
51109
52111
53114
54116
55118
56120
57122
58124
59127
60129
61131
62133
63135
64137
65139
66142
67144
68146
69148

[2,4,6,8,10,12,14,17,19,21,23,25,27,30,32,34,36,
 38,40,42,45,47,49,51,53,55,58,60,62,64,66,68,70,
 73,75,77,79,81,83,86,88,90,92,94,96,98,101,103,
 105,107,109,111,114,116,118,120,122,124,127,129,
 131,133,135,137,139,142,144,146,148]