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A004912 as a simple table

na(n)
10
21
32
43
54
65
76
82048
92049
102050
112051
122052
132053
144096
154097
164098
174099
184100
196144
206145
216146
226147
238192
248193
258194
2610240
2710241
2812288
29177147
30177148
31177149
32177150
33177151
34177152
35179195
36179196
37179197
38179198
39179199
40181243

[0,1,2,3,4,5,6,2048,2049,2050,2051,2052,2053,4096,
 4097,4098,4099,4100,6144,6145,6146,6147,8192,8193,
 8194,10240,10241,12288,177147,177148,177149,
 177150,177151,177152,179195,179196,179197,179198,
 179199,181243]