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A053944 as a simple table

na(n)
16
2256
3744
41834
518806
623166
723566
8256194
92357194
102523166
11187979694
122310098166
1319121548934
1425209786895834

[6,256,744,1834,18806,23166,23566,256194,2357194,
 2523166,187979694,2310098166,19121548934,
 25209786895834]