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A131320 as a simple table

na(n)
11
22
33
43
55
63
73
83
95
103
113
1211
137
143
153
166
179
183
193
208
219
2210
2311
243
259
263
273
283
2915
3026
318
3213
3310
3412
353
3611
3719
383
3923
4013
4113
423
4321
443
4523
4610
473
483
499
503
513
5216
5317
543
553
5623
5717
5819
5929
6022
6111
623
6317
6410
6525
663
6722
683
6935
7030
7111
7229
7357
743
753
7617
7765
7816
7913
8020
8121
823
833

[1,2,3,3,5,3,3,3,5,3,3,11,7,3,3,6,9,3,3,8,9,10,11,
 3,9,3,3,3,15,26,8,13,10,12,3,11,19,3,23,13,13,3,
 21,3,23,10,3,3,9,3,3,16,17,3,3,23,17,19,29,22,11,
 3,17,10,25,3,22,3,35,30,11,29,57,3,3,17,65,16,13,
 20,21,3,3]