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A226326 as a simple table

na(n)
12
26
320
442
5154
6156
7306
8836
9552
101044
111488
122960
132460
143870
157050
1612084
178496
1810248
1914070
2012780
2118396
2231284
2350796
2438448
2555872
2682416
2737080
2851360
2965400
3088140
31146304
32169776
33123300
34133440
35150192
36181200
37131880
38176040
39260520
40326970

[2,6,20,42,154,156,306,836,552,1044,1488,2960,
 2460,3870,7050,12084,8496,10248,14070,12780,18396,
 31284,50796,38448,55872,82416,37080,51360,65400,
 88140,146304,169776,123300,133440,150192,181200,
 131880,176040,260520,326970]