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A038142 as a simple table

na(n)
11
21
32
45
512
636
7118
8411
91489
105572
1121115
1281121
13314075
141224528
154799205

[1,1,2,5,12,36,118,411,1489,5572,21115,81121,
 314075,1224528,4799205]