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A239326 as a simple table

na(n)
12
23
36
413
521
6100
7120
8195
9393
10541
111749
121849
133640
143829
154003
165488
175754
188973
198989
209043
2110824
2210828
2313488
2417016
2518493
2619306
2721505
2824270
2927139
3030163
3131530
3234134
3335034
3439514
3540761
3646215
3746285
3846398
3949071
4049869
4153319
4255320

[2,3,6,13,21,100,120,195,393,541,1749,1849,3640,
 3829,4003,5488,5754,8973,8989,9043,10824,10828,
 13488,17016,18493,19306,21505,24270,27139,30163,
 31530,34134,35034,39514,40761,46215,46285,46398,
 49071,49869,53319,55320]