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A291186 as a simple table

na(n)
11
21
33
48
55
69
77
816
99
1025
1111
12288
1313
1449
15225
161024
1717
18972
1919
204000
21441
22121
2323
2441472
25125
26169
27729
2810976
2929
30101250
3131
3216384
331089
34289
351225
361119744
3737
38361
391521
40320000
4141
42388962
4343
4442592
4530375
46529
4747
48127401984
49343
5062500
512601

[1,1,3,8,5,9,7,16,9,25,11,288,13,49,225,1024,17,
 972,19,4000,441,121,23,41472,125,169,729,10976,29,
 101250,31,16384,1089,289,1225,1119744,37,361,1521,
 320000,41,388962,43,42592,30375,529,47,127401984,
 343,62500,2601]