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A019025 as a simple table

na(n)
22
34
422
5154
6924
75744
837530
9241091
101545066
1110150409
1268167608
13463298678
143178429166
1521994032666
16153340266738

[2,4,22,154,924,5744,37530,241091,1545066,
 10150409,68167608,463298678,3178429166,
 21994032666,153340266738]