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A109896 as a simple table

na(n)
14
25
37
47
57
68
710
813
99
109
1113
127
137
1411
157
1613
1713
1811
1911
2015
2111
2213
2315
2413
2515
2616
2714
2811
2911
3013
319
3217
3317
3419
3515
3615
3713
3817
3914
408
4115
4218
4320
4415
4517
4617
4717
489
4919
5011
5120
5220
5313
5419
5519
5615
5715
589
5914
6014
6117
6216
6315
6418
6513
6620
6714
6814
6914
7017
7115
7215
7315
7421
7513

[4,5,7,7,7,8,10,13,9,9,13,7,7,11,7,13,13,11,11,15,
 11,13,15,13,15,16,14,11,11,13,9,17,17,19,15,15,13,
 17,14,8,15,18,20,15,17,17,17,9,19,11,20,20,13,19,
 19,15,15,9,14,14,17,16,15,18,13,20,14,14,14,17,15,
 15,15,21,13]