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A166976 as a simple table

na(n)
00
11
21
33
44
55
69
712
816
921
1027
1136
1248
1364
1485
1581
16108
17144
18192
19256
20341
21243
22324
23432
24576
25768
261024
271365
28729
29972
301296
311728
322304
333072
344096
355461
362187
372916
383888
395184
406912
419216
4212288
4316384
4421845
456561

[0,1,1,3,4,5,9,12,16,21,27,36,48,64,85,81,108,144,
 192,256,341,243,324,432,576,768,1024,1365,729,972,
 1296,1728,2304,3072,4096,5461,2187,2916,3888,5184,
 6912,9216,12288,16384,21845,6561]