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A181338 as a simple table

na(n)
12
25
32
412
510
62
729
841
910
102
1170
12152
1346
1410
152
16169
17536
18193
1946
2010
212
22408
231830
24770
25198
2646
2710
282
29985
306120
312972
32811
33198
3446
3510
362
372378
3820178
3911202
403218
41816
42198
4346
4410
452
465741
4765867
4841481
4912484
503259
51816
52198
5346
5410
552
5613860

[2,5,2,12,10,2,29,41,10,2,70,152,46,10,2,169,536,
 193,46,10,2,408,1830,770,198,46,10,2,985,6120,
 2972,811,198,46,10,2,2378,20178,11202,3218,816,
 198,46,10,2,5741,65867,41481,12484,3259,816,198,
 46,10,2,13860]