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A321956 as a simple table

na(n)
01
11
20
32
44
50
616
740
80
9456
101759
110
1234636
13175198
140
155494621
1634043062
170

[1,1,0,2,4,0,16,40,0,456,1759,0,34636,175198,0,
 5494621,34043062,0]