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A153518 as a simple table

na(n)
12
25
35
42
546
62
72
8123
9123
102
112
12135
13476
14135
152
162
17147
181226
191226
20147
212
222
23159
242048
254832
262048
27159
282
292
30171
312942
3213010
3313010
342942
35171
362
372
38183
393908
4026192
4150180
4226192
433908
44183
452
462
47195
484946
4944810
50141422
51141422
5244810
534946
54195
552

[2,5,5,2,46,2,2,123,123,2,2,135,476,135,2,2,147,
 1226,1226,147,2,2,159,2048,4832,2048,159,2,2,171,
 2942,13010,13010,2942,171,2,2,183,3908,26192,
 50180,26192,3908,183,2,2,195,4946,44810,141422,
 141422,44810,4946,195,2]