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A007728 as a simple table

na(n)
01
11
22
32
44
53
65
74
88
96
109
117
1212
138
1412
159
1617
1712
1818
1914
2023
2115
2222
2316
2428
2519
2627
2720
2832
2920
3029
3121
3238
3326
3438
3529
3647
3730
3844
3932
4055
4137
4252
4338
4460
4537
4653
4738
4866
4944
5063
5147
5274
5346
5466
5547
5679
5752
5872
5952
6081
6149
6270
6350
6488
6559
6685
6764

[1,1,2,2,4,3,5,4,8,6,9,7,12,8,12,9,17,12,18,14,23,
 15,22,16,28,19,27,20,32,20,29,21,38,26,38,29,47,
 30,44,32,55,37,52,38,60,37,53,38,66,44,63,47,74,
 46,66,47,79,52,72,52,81,49,70,50,88,59,85,64]