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A309691 as a simple table

na(n)
22
36
416
532
665
7113
8199
9323
10523
11803
121237
131826
142696
153873
165544
177767
1810859
1914912
2020425
2127598
2237156
2349473
2465679
2586350
26113179
27147191
28190806
29245676
30315415
31402522
32512250
33648551
34818831
351029139
361290151
371610701
382005969
392489167
403081434

[2,6,16,32,65,113,199,323,523,803,1237,1826,2696,
 3873,5544,7767,10859,14912,20425,27598,37156,
 49473,65679,86350,113179,147191,190806,245676,
 315415,402522,512250,648551,818831,1029139,
 1290151,1610701,2005969,2489167,3081434]