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A016947 as a simple table

na(n)
027
1729
23375
39261
419683
535937
659319
791125
8132651
9185193
10250047
11328509
12421875
13531441
14658503
15804357
16970299
171157625
181367631
191601613
201860867
212146689
222460375
232803221
243176523
253581577
264019679
274492125
285000211
295545233
306128487
316751269

[27,729,3375,9261,19683,35937,59319,91125,132651,
 185193,250047,328509,421875,531441,658503,804357,
 970299,1157625,1367631,1601613,1860867,2146689,
 2460375,2803221,3176523,3581577,4019679,4492125,
 5000211,5545233,6128487,6751269]