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A316391 as a simple table

na(n)
41
54
662
7340
84734
933855
10495371
114403025
1270083872
13746704117
1413023762276
15161905131484
163091115525637
1743928623624790
18914530883776894
1914623431780216366
20330413968185491070
215870376151413374683
22143271256595612492851
232799645366893284489691

[1,4,62,340,4734,33855,495371,4403025,70083872,
 746704117,13023762276,161905131484,3091115525637,
 43928623624790,914530883776894,14623431780216366,
 330413968185491070,5870376151413374683,
 143271256595612492851,2799645366893284489691]