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A172436 as a simple table

na(n)
11
215
355
4159
5411
6411
7411
83647
915243
1015243
1115243
12113343
131133759
141133759
151133759
1629149139

[1,15,55,159,411,411,411,3647,15243,15243,15243,
 113343,1133759,1133759,1133759,29149139]