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A134990 as a simple table

na(n)
18
215
310
413
512
611
714
89
916
107
1118
125
1320
143
1522
161
1724
18-1
1926
20-3
2128
22-5
2330
24-7
2532
26-9
2734
28-11
2936
30-13
3138
32-15
3340
34-17
3542
36-19
3744
38-21
3946
40-23
4148
42-25
4350
44-27
4552
46-29
4754
48-31
4956
50-33
5158
52-35
5360
54-37
5562
56-39
5764
58-41
5966
60-43
6168
62-45
6370
64-47
6572
66-49
6774
68-51
6976
70-53
7178
72-55
7380
74-57
7582
76-59
7784
78-61

[8,15,10,13,12,11,14,9,16,7,18,5,20,3,22,1,24,-1,
 26,-3,28,-5,30,-7,32,-9,34,-11,36,-13,38,-15,40,
 -17,42,-19,44,-21,46,-23,48,-25,50,-27,52,-29,54,
 -31,56,-33,58,-35,60,-37,62,-39,64,-41,66,-43,68,
 -45,70,-47,72,-49,74,-51,76,-53,78,-55,80,-57,82,
 -59,84,-61]