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A056587 as a simple table

na(n)
00
11
21
31024
459049
59765625
61073741824
7137858491849
816679880978201
92064377754059776
10253295162119140625
1131181719929966183601
123833759992447475122176
13471584161164422542970449

[0,1,1,1024,59049,9765625,1073741824,137858491849,
 16679880978201,2064377754059776,
 253295162119140625,31181719929966183601,
 3833759992447475122176,471584161164422542970449]