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A147475 as a simple table

na(n)
11
21
31
49
525
693
7633
87225
9110262
101975143
1150880872
121933660635
13104069532412
147622213781825

[1,1,1,9,25,93,633,7225,110262,1975143,50880872,
 1933660635,104069532412,7622213781825]