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A146152 as a simple table

na(n)
11
21
35
413
547
6375
73972
847068
9892007
1026215027
111025956370
1255524872121
134474246357794
14516153334755405
1583220252331733856
1619182699863712254411

[1,1,5,13,47,375,3972,47068,892007,26215027,
 1025956370,55524872121,4474246357794,
 516153334755405,83220252331733856,
 19182699863712254411]