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A006431 as a simple table

na(n)
10
21
32
43
55
66
77
88
911
1014
1115
1223
1324
1432
1556
1696
17128
18224
19384
20512
21896
221536
232048
243584
256144
268192
2714336
2824576
2932768
3057344
3198304
32131072
33229376
34393216
35524288
36917504
371572864
382097152
393670016
406291456
418388608
4214680064

[0,1,2,3,5,6,7,8,11,14,15,23,24,32,56,96,128,224,
 384,512,896,1536,2048,3584,6144,8192,14336,24576,
 32768,57344,98304,131072,229376,393216,524288,
 917504,1572864,2097152,3670016,6291456,8388608,
 14680064]