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A088683 as a simple table

na(n)
16
26
38
46
512
610
710
812
96
1018
1112
1212
1312
1412
1514
166
178
1812
198
2012
216
2220
236
2414
2510
2612
2712
2810
2912
3016
3112
3218
3324
3412
3516
368
3710
3822
3910
4014
4114
4218
4312
4414
4512
4622
4712
4812
496
5018
5124
5218
5310
5418
5514
5616
5712
5816
5912
6022
6110
6214
6324
6418
6514
6610
678
6828
6910
7010
7116
7240
7314
7424
756

[6,6,8,6,12,10,10,12,6,18,12,12,12,12,14,6,8,12,8,
 12,6,20,6,14,10,12,12,10,12,16,12,18,24,12,16,8,
 10,22,10,14,14,18,12,14,12,22,12,12,6,18,24,18,10,
 18,14,16,12,16,12,22,10,14,24,18,14,10,8,28,10,10,
 16,40,14,24,6]