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A223281 as a simple table

na(n)
1729
229943
31881441
4137621799
510801441521
6879050854455
772981761306721
86127190749734087
9517631500569076305
1043882777288012073559
113727442176083442555713
12316954431035692378210023

[729,29943,1881441,137621799,10801441521,
 879050854455,72981761306721,6127190749734087,
 517631500569076305,43882777288012073559,
 3727442176083442555713,316954431035692378210023]