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A131956 as a simple table

na(n)
06
17
29
39
49
514
69
713
813
911
1013
1114
129
1314
1411
1517
1615
1718
189
1911
2011
2122
2224
2323
2413
2511
2613
2715
2810
2914
3014
3121
3218
3315
3417
3514
3610
3714
389
3913
4021
4118
4220
4320
4422
4537
4639
4738
4815
4918
5010
5111
5214
5322
5424
5523
5613
5711
5813
5916
6013
6116
6217
6325
6421
6522
6615
6716
6813
6926
7028
7125
7215

[6,7,9,9,9,14,9,13,13,11,13,14,9,14,11,17,15,18,9,
 11,11,22,24,23,13,11,13,15,10,14,14,21,18,15,17,
 14,10,14,9,13,21,18,20,20,22,37,39,38,15,18,10,11,
 14,22,24,23,13,11,13,16,13,16,17,25,21,22,15,16,
 13,26,28,25,15]