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A160949 as a simple table

na(n)
1-1
2-1
3-1
4-1
5-1
6-1
7-1
8-1
98
108
118
128
138
148
158
168
178
188
1917
2017
2117
2217
2317
2417
2517
2617
2717
2817
2926
3026
3126
3226
3326
3426
3526
3626
3726
3826
3935
4035
4135
4235
4335
4435
4535
4635
4735
4835
4944
5044
5144
5244
5344
5444
5544
5644
5744
5844
5953
6053
6153
6253
6353
6453
6553
6653
6753
6853
6962
7062
7162
7262
7362

[-1,-1,-1,-1,-1,-1,-1,-1,8,8,8,8,8,8,8,8,8,8,17,
 17,17,17,17,17,17,17,17,17,26,26,26,26,26,26,26,
 26,26,26,35,35,35,35,35,35,35,35,35,35,44,44,44,
 44,44,44,44,44,44,44,53,53,53,53,53,53,53,53,53,
 53,62,62,62,62,62]