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A272643 as a simple table

na(n)
51
66
73
81
917
1033
119
121
1340
14184
15168
1627
171
1887
19792
201592
21807
2281

[1,6,3,1,17,33,9,1,40,184,168,27,1,87,792,1592,
 807,81]