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A064772 as a simple table

na(n)
12
25
311
4257
5526
6147
71030
81027
9530793
1031603
1158685
122228292
13113060
14180326
15163123
1667280421584898
1745957792327018709129
1833414185
19870543318650
204406613081350403
2122864393425065
2282812579069940
231576297793
2427266016518

[2,5,11,257,526,147,1030,1027,530793,31603,58685,
 2228292,113060,180326,163123,67280421584898,
 45957792327018709129,33414185,870543318650,
 4406613081350403,22864393425065,82812579069940,
 1576297793,27266016518]