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A325786 as a simple table

na(n)
11
21
32
42
54
67
712
819
941
1071
11141
12255
13509
14924
151882
163395
176838
1812715
1925233
2047049

[1,1,2,2,4,7,12,19,41,71,141,255,509,924,1882,
 3395,6838,12715,25233,47049]