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A307313 as a simple table

na(n)
12
22
34
42
58
64
78
82
916
108
1116
124
1316
148
1516
162
1732
1816
1932
208
2132
2216
2332
244
2532
2616
2732
288
2932
3016
3132
322
3364
3432
3564
3616
3764
3832
3964
408
4164
4232
4364
4416
4564
4632
4764
484
4964
5032
5164
5216
5364
5432
5564
568
5764
5832
5964
6016
6164
6232
6364
642
65128
6664
67128
6832
69128
7064

[2,2,4,2,8,4,8,2,16,8,16,4,16,8,16,2,32,16,32,8,
 32,16,32,4,32,16,32,8,32,16,32,2,64,32,64,16,64,
 32,64,8,64,32,64,16,64,32,64,4,64,32,64,16,64,32,
 64,8,64,32,64,16,64,32,64,2,128,64,128,32,128,64]