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A331648 as a simple table

na(n)
11
24
316
491
5546
65094
747306
8561190
97098943
10103345704
111622632638
1228216141886
13526858348514
1410659286804538
15230286817182060
165319206290975993
17130370767029136518
183386434807625742926
1992801587319328412310
202677967917777310591454
2181124837170900250181072

[1,4,16,91,546,5094,47306,561190,7098943,
 103345704,1622632638,28216141886,526858348514,
 10659286804538,230286817182060,5319206290975993,
 130370767029136518,3386434807625742926,
 92801587319328412310,2677967917777310591454,
 81124837170900250181072]