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A140071 as a simple table

na(n)
11
23
31
49
54
61
727
813
97
101
1181
1240
1334
148
151
16243
17121
18142
1942
2011
211
22729
23364
24547
25184
2675
2712
281
292187
301093
312005
32731
33409
3487
3515
361
376561
383280
397108
402736
411958
42496
43132
4416
451
4619683
479841
4824604
499844
508610
512454
52892
53148
5419
551

[1,3,1,9,4,1,27,13,7,1,81,40,34,8,1,243,121,142,
 42,11,1,729,364,547,184,75,12,1,2187,1093,2005,
 731,409,87,15,1,6561,3280,7108,2736,1958,496,132,
 16,1,19683,9841,24604,9844,8610,2454,892,148,19,1]