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A000942 as a simple table

na(n)
11
21
31
43
54
612
726
877
9204
10624
111817
125585
1317007
1452803
15164001
16514009
171615044
185100324
1916152134
2051324864

[1,1,1,3,4,12,26,77,204,624,1817,5585,17007,52803,
 164001,514009,1615044,5100324,16152134,51324864]