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A084426 as a simple table

na(n)
22
32
46
52
66
710
88
910
1014
118
1218
1314
1418
1518
1620
1718
1814
1920
2026
2126
2228
2320
2428
2530
2634
2736
2838
2932
3036
3142
3232
3334
3444
3534
3646
3740
3848
3946
4044
4148
4254
4348
4456
4556
4652
4756
4856
4960
5056
5166
5268
5354
5470
5570
5672
5772
5870
5964
6064
6176
6270
6378
6486
6576
6688
6782
6872
6990
7090

[2,2,6,2,6,10,8,10,14,8,18,14,18,18,20,18,14,20,
 26,26,28,20,28,30,34,36,38,32,36,42,32,34,44,34,
 46,40,48,46,44,48,54,48,56,56,52,56,56,60,56,66,
 68,54,70,70,72,72,70,64,64,76,70,78,86,76,88,82,
 72,90,90]