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A339921 as a simple table

na(n)
11
25
37
413
515
618
722
861
985
10208
11271
12898
132142
142856
154392
1617171
1774886
1878901
19271951
20326600

[1,5,7,13,15,18,22,61,85,208,271,898,2142,2856,
 4392,17171,74886,78901,271951,326600]