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A233761 as a simple table

na(n)
00
11
22
32
44
52
64
76
88
92
104
116
1212
1314
1412
1514
1616
172
184
196
2012
2114
2220
2322
2426
2522
2612
2718
2832
2938
3028
3130
3232
332
344
356
3612
3714
3820
3922
4026
4122
4220
4330
4444
4562
4652
4746
4854
4938
5012
5118
5236
5346
5456
5562
5674
5774
5830
5942
6072
6186
6260
6362
6464
652
664
676
6812

[0,1,2,2,4,2,4,6,8,2,4,6,12,14,12,14,16,2,4,6,12,
 14,20,22,26,22,12,18,32,38,28,30,32,2,4,6,12,14,
 20,22,26,22,20,30,44,62,52,46,54,38,12,18,36,46,
 56,62,74,74,30,42,72,86,60,62,64,2,4,6,12]