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A354158 as a simple table

na(n)
1-1
2-1
30
4-1
52
60
72
8-1
96
102
115
120
138
142
156
16-1
1714
186
1911
202
2115
225
2311
240
2520
268
2715
282
2920
306
3114
32-1
3330
3414
3523
366
3729
3811
3921
402
4135
4215
4326
445
4533
4611
4723
480
4944
5020
5133
528
5341
5415
5529
562
5748
5820
5935
606
6144
6214
6330
64-1
6562
6630
6747
6814
6957
7023
7141
726
7365
7429
7548
7611
7759
7821
7941
802
8175
8235
8356
8415
8568
8626
8748
885
8977
9033

[-1,-1,0,-1,2,0,2,-1,6,2,5,0,8,2,6,-1,14,6,11,2,
 15,5,11,0,20,8,15,2,20,6,14,-1,30,14,23,6,29,11,
 21,2,35,15,26,5,33,11,23,0,44,20,33,8,41,15,29,2,
 48,20,35,6,44,14,30,-1,62,30,47,14,57,23,41,6,65,
 29,48,11,59,21,41,2,75,35,56,15,68,26,48,5,77,33]