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A219069 as a simple table

na(n)
13
221
348
491
5133
6243
7273
8336
9481
10768
11651
12741
13931
141281
151875
161333
171456
181701
192128
202821
213888
222451
232613
242923
253441
264251
275461
287203
294161
304368
314753
325376
336321
347696
359633
3612288
376643
386901
397371
408113
419211
4210773
4312931
4415841
4519683

[3,21,48,91,133,243,273,336,481,768,651,741,931,
 1281,1875,1333,1456,1701,2128,2821,3888,2451,2613,
 2923,3441,4251,5461,7203,4161,4368,4753,5376,6321,
 7696,9633,12288,6643,6901,7371,8113,9211,10773,
 12931,15841,19683]