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A000017 as a simple table

na(n)
11
20
30
42
52
64
78
84
916
1012
1148
1280
13136
14420
151240
162872
177652
1818104
1950184

[1,0,0,2,2,4,8,4,16,12,48,80,136,420,1240,2872,
 7652,18104,50184]