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A374628 as a simple table

na(n)
01
13
23
34
49
59
66
79
89
97
1012
1112
1213
1327
1427
1518
1627
1727
1815
1918
2018
2115
2227
2327
2418
2527
2627
2716
2821
2921
3019
3136
3236
3324
3436
3536
3625
3739
3839
3940
4081
4181
4254
4381
4481
4545
4654
4754
4845
4981
5081
5154
5281
5381
5442
5545
5645
5733
5854
5954
6036
6154
6254
6333
6445
6545
6642
6781
6881
6954
7081
7181
7245
7354
7454
7545
7681
7781
7854
7981
8081

[1,3,3,4,9,9,6,9,9,7,12,12,13,27,27,18,27,27,15,
 18,18,15,27,27,18,27,27,16,21,21,19,36,36,24,36,
 36,25,39,39,40,81,81,54,81,81,45,54,54,45,81,81,
 54,81,81,42,45,45,33,54,54,36,54,54,33,45,45,42,
 81,81,54,81,81,45,54,54,45,81,81,54,81,81]