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A017445 as a simple table

na(n)
0262144
138443359375
25429503678976
3129961739795077
41352605460594688
58662995818654939
640353607000000000
7150094635296999121
8472161363286556672
91304773183829244583
103251948521156637184

[262144,38443359375,5429503678976,129961739795077,
 1352605460594688,8662995818654939,
 40353607000000000,150094635296999121,
 472161363286556672,1304773183829244583,
 3251948521156637184]