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A121461 as a simple table

na(n)
11
21
31
43
51
61
78
83
91
101
1121
128
133
141
151
1655
1721
188
193
201
211
22144
2355
2421
258
263
271
281
29377
30144
3155
3221
338
343
351
361
37987
38377
39144
4055
4121
428
433
441
451
462584
47987
48377
49144
5055
5121
528
533
541
551
566765
572584
58987
59377
60144
6155
6221
638
643
651
661
6717711
686765
692584
70987
71377
72144
7355
7421

[1,1,1,3,1,1,8,3,1,1,21,8,3,1,1,55,21,8,3,1,1,144,
 55,21,8,3,1,1,377,144,55,21,8,3,1,1,987,377,144,
 55,21,8,3,1,1,2584,987,377,144,55,21,8,3,1,1,6765,
 2584,987,377,144,55,21,8,3,1,1,17711,6765,2584,
 987,377,144,55,21]