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A158690 as a simple table

na(n)
01
11
25
355
41073
532671
61431665
785363615
86646603073
9654896692351
1079656194515025
1111722538113191775
122052949879753739873
13421931472111868912831
14100568330857984368195185

[1,1,5,55,1073,32671,1431665,85363615,6646603073,
 654896692351,79656194515025,11722538113191775,
 2052949879753739873,421931472111868912831,
 100568330857984368195185]