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A223531 as a simple table

na(n)
11
27
36
491
5156
636
71729
84446
92052
10216
1143225
12148200
13102600
1421600
151296
161339975
175742750
185301000
191674000
20200880
217776
2249579075
23254978100
24294205500
25123876000
2622297680
271726272
2846656
292131900225
3012791401350
3117711171100
329321669000

[1,7,6,91,156,36,1729,4446,2052,216,43225,148200,
 102600,21600,1296,1339975,5742750,5301000,1674000,
 200880,7776,49579075,254978100,294205500,
 123876000,22297680,1726272,46656,2131900225,
 12791401350,17711171100,9321669000]