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A195957 as a simple table

na(n)
12
26
310
416
521
644
782
8144
9273
10531
111032
121960
133805
147446
1514505
1628254
1755311
18108511
19212645
20417039
21819145
221609692
233163058
246217976
2512229218
2624055201
2747320658
2893104592
29183213156
30360551489
31709578685
321396577604
332748853048

[2,6,10,16,21,44,82,144,273,531,1032,1960,3805,
 7446,14505,28254,55311,108511,212645,417039,
 819145,1609692,3163058,6217976,12229218,24055201,
 47320658,93104592,183213156,360551489,709578685,
 1396577604,2748853048]