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A297174 as a simple table

na(n)
10
21
31
45
51
619
71
869
95
1019
111
122123
131
1419
1519
164165
171
182131
191
202125
2119
2219
231
244228171
255
2619
2769
282125
291
30526631
311
322101317
3319
3419
3519
36268706123
371
3819
3919
404228237
411
42526643
431
442125
452123
4619
471
48550026380363
495
502131
5119
522125
531
544229203
5519
564228237
5719
5819
591
608798249190555
611
6219
632123
6417181970501
6519
66526643
671
682125

[0,1,1,5,1,19,1,69,5,19,1,2123,1,19,19,4165,1,
 2131,1,2125,19,19,1,4228171,5,19,69,2125,1,526631,
 1,2101317,19,19,19,268706123,1,19,19,4228237,1,
 526643,1,2125,2123,19,1,550026380363,5,2131,19,
 2125,1,4229203,19,4228237,19,19,1,8798249190555,1,
 19,2123,17181970501,19,526643,1,2125]