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A342637 as a simple table

na(n)
00
11
21
39
41
517
69
773
81
925
1017
11145
129
13145
1473
15585
161
1733
1825
19217
2017
21281
22145
231169
249
25217
26145
271233
2873
291169
30585
314681
321
3341
3433
35289
3625
37417
38217
391753
4017
41417
42281
432393
44145
452329
461169
479361
489
49289
50217
511881
52145
532393
541233
559937
5673
571753
581169
599937
60585

[0,1,1,9,1,17,9,73,1,25,17,145,9,145,73,585,1,33,
 25,217,17,281,145,1169,9,217,145,1233,73,1169,585,
 4681,1,41,33,289,25,417,217,1753,17,417,281,2393,
 145,2329,1169,9361,9,289,217,1881,145,2393,1233,
 9937,73,1753,1169,9937,585]