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A188670 as a simple table

na(n)
03
16
25
33
46
58
63
76
813
93
106
1121
123
136
1434
153
166
1755
183
196
2089
213
226
23144
243
256
26233
273
286
29377
303
316
32610
333
346
35987
363
376
381597
393
406
412584
423
436
444181
453
466
476765
483
496
5010946
513
526
5317711
543
556
5628657
573
586
5946368
603
616
6275025
633
646
65121393

[3,6,5,3,6,8,3,6,13,3,6,21,3,6,34,3,6,55,3,6,89,3,
 6,144,3,6,233,3,6,377,3,6,610,3,6,987,3,6,1597,3,
 6,2584,3,6,4181,3,6,6765,3,6,10946,3,6,17711,3,6,
 28657,3,6,46368,3,6,75025,3,6,121393]