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A066430 as a simple table

na(n)
10
264
3512
44096
532768
6262144
72097152
80
95077565
1073741824
1115579352
12352387072
13769038655
14195124224
151009588832
160
174384458125
182836131328
199009163584
207006846976
2133653509289
2241376995328
2317808619293
2426138902528
2511605068943
26200037316608
27161669290688

[0,64,512,4096,32768,262144,2097152,0,5077565,
 73741824,15579352,352387072,769038655,195124224,
 1009588832,0,4384458125,2836131328,9009163584,
 7006846976,33653509289,41376995328,17808619293,
 26138902528,11605068943,200037316608,161669290688]