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A057075 as a simple table

na(n)
11
20
34
40
52
627
70
81
913
10256
110
121
139
14128
153125
160
170
186
1985
201562
2146656
220
230
245
2564
261041
2723328
28823543
290
300
314
3251
33781
3415552
35411771
3616777216
370
380
393
4042
41625
4211664
43274514
448388608
45387420489
460
470
483
4936
50520
519331
52205885
535592405
54193710244
5510000000000

[1,0,4,0,2,27,0,1,13,256,0,1,9,128,3125,0,0,6,85,
 1562,46656,0,0,5,64,1041,23328,823543,0,0,4,51,
 781,15552,411771,16777216,0,0,3,42,625,11664,
 274514,8388608,387420489,0,0,3,36,520,9331,205885,
 5592405,193710244,10000000000]