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A069740 as a simple table

na(n)
11
21
31
41
54
61
764
84
965536
10512
1133554432
1265536
1368719476736
146442450944
159007199254740992
16281474976710656
17220326730624766167090200576
18340010386766614455386112
19486777830487640090174734030864384

[1,1,1,1,4,1,64,4,65536,512,33554432,65536,
 68719476736,6442450944,9007199254740992,
 281474976710656,220326730624766167090200576,
 340010386766614455386112,
 486777830487640090174734030864384]