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A007286 as a simple table

na(n)
01
11
25
326
4205
51936
622265
7297296
84544185
978098176
101491632525
1131336418816
12718181418565
1317831101321216
14476768795646785
1513658417358350336
16417370516232719345
1713551022195053101056

[1,1,5,26,205,1936,22265,297296,4544185,78098176,
 1491632525,31336418816,718181418565,
 17831101321216,476768795646785,13658417358350336,
 417370516232719345,13551022195053101056]