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A175399 as a simple table

na(n)
00
11
22
33
44
55
66
77
88
99
101
111
121
131
141
151
161
171
181
191
201
212
224
238
241
259
261296
271
281073741824
2925
301
313
329
33128
348
354096
361628413597910449
3772057594037927936
38221073919720733357899776
391
401
414
421
431296
441073741824
451
461
471

[0,1,2,3,4,5,6,7,8,9,1,1,1,1,1,1,1,1,1,1,1,2,4,8,
 1,9,1296,1,1073741824,25,1,3,9,128,8,4096,
 1628413597910449,72057594037927936,
 221073919720733357899776,1,1,4,1,1296,1073741824,
 1,1,1]