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A198013 as a simple table

na(n)
11
21
31
42
57
62
73
812
912
103
115
1231
1351
1431
155
168
1779
18182
19182
2079
218
2213
23186
24753
251165
26753
27186
2813
2921
30465
313061
327513
337513
343061
35465
3621
3734
381131
3912503
4046044
4180519
4246044
4312503
441131
4534
4655
472776
4851668
49299335
50788961
51788961
52299335
5351668

[1,1,1,2,7,2,3,12,12,3,5,31,51,31,5,8,79,182,182,
 79,8,13,186,753,1165,753,186,13,21,465,3061,7513,
 7513,3061,465,21,34,1131,12503,46044,80519,46044,
 12503,1131,34,55,2776,51668,299335,788961,788961,
 299335,51668]