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A160001 as a simple table

na(n)
11
21
32
41
52
64
73
81
94
103
114
129
134
148
155
161
176
1818
1910
205
212
2213
236
2425
2519
2610
278
2841
2924
3014
3110
321
3340
3419
358
36138
3790
3855
3962
407
4117
423
43144
4463
4534
4616
4716
4843
49218
50148
51105
5222
537
5439
5524
56323
57371
58150
59224
6054
6127
6240
6330
641
65572
66444
67344
6871
6932
7019
7139
721766
7352

[1,1,2,1,2,4,3,1,4,3,4,9,4,8,5,1,6,18,10,5,2,13,6,
 25,19,10,8,41,24,14,10,1,40,19,8,138,90,55,62,7,
 17,3,144,63,34,16,16,43,218,148,105,22,7,39,24,
 323,371,150,224,54,27,40,30,1,572,444,344,71,32,
 19,39,1766,52]