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A242268 as a simple table

na(n)
1225
25625
35405625
423765625
52127515625
658503515625
751921031640625
8250727431640625
920090404775390625
10608180644775390625
11498431438615478515625
122642208974615478515625
13189450791534674072265625
146319494849134674072265625
159981411957966851806640625

[225,5625,5405625,23765625,2127515625,58503515625,
 51921031640625,250727431640625,20090404775390625,
 608180644775390625,498431438615478515625,
 2642208974615478515625,189450791534674072265625,
 6319494849134674072265625,
 9981411957966851806640625]