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A202931 as a simple table

na(n)
13
26
36
412
552
612
724
8352
9352
1024
1148
122444
138460
142444
1548
1696
1717508
18194636
19194636
2017508
2196
22192
23124340
244439916
2514394092
264439916
27124340
28192
29384
30872940
31100236532
321032147416
331032147416
34100236532
35872940
36384
37768
386112832

[3,6,6,12,52,12,24,352,352,24,48,2444,8460,2444,
 48,96,17508,194636,194636,17508,96,192,124340,
 4439916,14394092,4439916,124340,192,384,872940,
 100236532,1032147416,1032147416,100236532,872940,
 384,768,6112832]