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A161718 as a simple table

na(n)
01
1-2
26
3-10
414
5-18
622
7-26
830
9-34
1038
11-42
1246
13-50
1454
15-58
1662
17-66
1870
19-74
2078
21-82
2286
23-90
2494
25-98
26102
27-106
28110
29-114
30118
31-122
32126
33-130
34134
35-138
36142
37-146
38150
39-154
40158
41-162
42166
43-170
44174
45-178
46182
47-186
48190
49-194
50198
51-202
52206
53-210
54214
55-218
56222
57-226
58230
59-234

[1,-2,6,-10,14,-18,22,-26,30,-34,38,-42,46,-50,54,
 -58,62,-66,70,-74,78,-82,86,-90,94,-98,102,-106,
 110,-114,118,-122,126,-130,134,-138,142,-146,150,
 -154,158,-162,166,-170,174,-178,182,-186,190,-194,
 198,-202,206,-210,214,-218,222,-226,230,-234]