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A184346 as a simple table

na(n)
11
21
32
41
57
616
745
8628
91612
1014387
1152539
12275568
131397560
145222290
1530835346
16108322293
17606465366
182386082882

[1,1,2,1,7,16,45,628,1612,14387,52539,275568,
 1397560,5222290,30835346,108322293,606465366,
 2386082882]