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A186574 as a simple table

na(n)
1134217728
240922
340922
42175043
53383
62175043
75261909
816401
916401
105261909
1121336430
12339649
13335092
14339649
1521336430
1641303124
17851259
181406478
191406478
20851259
2141303124
2262806428
231119049
242074892
2517616908
262074892
271119049

[134217728,40922,40922,2175043,3383,2175043,
 5261909,16401,16401,5261909,21336430,339649,
 335092,339649,21336430,41303124,851259,1406478,
 1406478,851259,41303124,62806428,1119049,2074892,
 17616908,2074892,1119049]