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A156869 as a simple table

na(n)
11
21
31
43
51
61
714
84
91
101
11147
1217
134
141
151
163462
17164
1818
194
201
211
22294314
233627
24167
2518
264
271
281
29159330691
30297976
313644
32168
3318
344
351
361

[1,1,1,3,1,1,14,4,1,1,147,17,4,1,1,3462,164,18,4,
 1,1,294314,3627,167,18,4,1,1,159330691,297976,
 3644,168,18,4,1,1]