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A229896 as a simple table

na(n)
11
21
34
41
55
627
71
87
937
10256
111
129
1361
14369
153125
161
1711
1891
19671
204651
2146656
221
2313
24127
251105
269031
2770993
28823543
291
3015
31169
321695
3315961
34144495
351273609
3616777216
371
3817
39217
402465
4126281
42269297
432685817
4426269505
45387420489
461
4719
48271
493439

[1,1,4,1,5,27,1,7,37,256,1,9,61,369,3125,1,11,91,
 671,4651,46656,1,13,127,1105,9031,70993,823543,1,
 15,169,1695,15961,144495,1273609,16777216,1,17,
 217,2465,26281,269297,2685817,26269505,387420489,
 1,19,271,3439]