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A108644 as a simple table

na(n)
11
23
32
47
54
65
713
88
96
1010
1121
1214
139
1411
1517
1631
1722
1815
1912
2018
2126
2243
2332
2423
2516
2619
2727
2837
2957
3044
3133
3224
3320
3428
3538
3650
3773
3858
3945
4034
4125
4229
4339
4451
4565
4691
4774
4859
4946
5035
5130
5240
5352
5466
5582
56111
5792
5875
5960
6047
6136
6241
6353
6467
6583
66101

[1,3,2,7,4,5,13,8,6,10,21,14,9,11,17,31,22,15,12,
 18,26,43,32,23,16,19,27,37,57,44,33,24,20,28,38,
 50,73,58,45,34,25,29,39,51,65,91,74,59,46,35,30,
 40,52,66,82,111,92,75,60,47,36,41,53,67,83,101]