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A103178 as a simple table

na(n)
12
22
34
42
58
68
74
88
98
108
1132
1224
138
1416
158
1616
1716
1816
194
208
218
2216
238
2424
2516
2664
274
2832
298
30128
3132
3232
33128
34128
35192
3616
3716
3864
3916
40768
418
4248
43256
44128

[2,2,4,2,8,8,4,8,8,8,32,24,8,16,8,16,16,16,4,8,8,
 16,8,24,16,64,4,32,8,128,32,32,128,128,192,16,16,
 64,16,768,8,48,256,128]