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A181537 as a simple table

na(n)
11
22
32
44
55
66
76
82
99
106
119
120
139
1412
1514
1616
1717
1815
1910
2018
2118
2213
239
2422
2521
2618
2721
2816
290
3030
3124
3211
3329
349
3526
3632
3718
3815
3934
4039
4129
4237
4324
4427
4533
4631
470
4830
4930
5015
5140
5243
5335
5454
5545
5642
5757
5851
598
6060

[1,2,2,4,5,6,6,2,9,6,9,0,9,12,14,16,17,15,10,18,
 18,13,9,22,21,18,21,16,0,30,24,11,29,9,26,32,18,
 15,34,39,29,37,24,27,33,31,0,30,30,15,40,43,35,54,
 45,42,57,51,8,60]