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A198155 as a simple table

na(n)
11
21
31
42
57
62
73
812
912
103
115
1231
1354
1431
155
168
1779
18240
19240
2079
218
2213
23186
241170
252093
261170
27186
2813
2921
30465
315330
3217991
3317991
345330
35465
3621
3734
381131
3924689
40145266
41260917
42145266
4324689
441131
4534
4655
472776
48116890
491255491
503964286
513964286

[1,1,1,2,7,2,3,12,12,3,5,31,54,31,5,8,79,240,240,
 79,8,13,186,1170,2093,1170,186,13,21,465,5330,
 17991,17991,5330,465,21,34,1131,24689,145266,
 260917,145266,24689,1131,34,55,2776,116890,
 1255491,3964286,3964286]