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A307704 as a simple table

na(n)
1-1
21
3-1
42
50
64
72
86
93
107
115
1211
139
1413
159
1614
1712
1818
1916
2022
2118
2222
2320
2428
2525
2629
2725
2831
2929
3037
3135
3241
3337
3441
3537
3646
3744
3848
3944
4052
4150
4258
4356
4462
4556
4660
4758
4868
4965
5071
5167
5273
5371
5479
5575
5683
5779
5883
5981
6093
6191
6295
6389
6496
6592
66100
6798
68104
69100
70108

[-1,1,-1,2,0,4,2,6,3,7,5,11,9,13,9,14,12,18,16,22,
 18,22,20,28,25,29,25,31,29,37,35,41,37,41,37,46,
 44,48,44,52,50,58,56,62,56,60,58,68,65,71,67,73,
 71,79,75,83,79,83,81,93,91,95,89,96,92,100,98,104,
 100,108]