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A007179 as a simple table

na(n)
00
11
21
34
46
516
628
764
8120
9256
10496
111024
122016
134096
148128
1516384
1632640
1765536
18130816
19262144
20523776
211048576
222096128
234194304
248386560
2516777216
2633550336
2767108864
28134209536
29268435456
30536854528
311073741824
322147450880
334294967296
348589869056

[0,1,1,4,6,16,28,64,120,256,496,1024,2016,4096,
 8128,16384,32640,65536,130816,262144,523776,
 1048576,2096128,4194304,8386560,16777216,33550336,
 67108864,134209536,268435456,536854528,1073741824,
 2147450880,4294967296,8589869056]