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A193617 as a simple table

na(n)
00
11
21
31
41
52
64
78
818
943
10107
11282
12771
132167
146241
1518421
1655309
17168845
18524728
191649764

[0,1,1,1,1,2,4,8,18,43,107,282,771,2167,6241,
 18421,55309,168845,524728,1649764]