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A191488 as a simple table

na(n)
04
16
28
310
48
512
616
718
88
912
1016
1120
1216
1324
1432
1534
168
1712
1816
1920
2016
2124
2232
2336
2416
2524
2632
2740
2832
2948
3064
3166
328
3312
3416
3520
3616
3724
3832
3936
4016
4124
4232
4340
4432
4548
4664
4768
4816
4924
5032
5140
5232
5348
5464
5572
5632
5748
5864
5980
6064
6196
62128

[4,6,8,10,8,12,16,18,8,12,16,20,16,24,32,34,8,12,
 16,20,16,24,32,36,16,24,32,40,32,48,64,66,8,12,16,
 20,16,24,32,36,16,24,32,40,32,48,64,68,16,24,32,
 40,32,48,64,72,32,48,64,80,64,96,128]