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A146727 as a simple table

na(n)
11
21
31
41
51
61
71
81
91
101
113
123
1313
1413
1535
1635
17157
18157
19741
20741
214435
224435
2344453
2444453

[1,1,1,1,1,1,1,1,1,1,3,3,13,13,35,35,157,157,741,
 741,4435,4435,44453,44453]