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A280581 as a simple table

na(n)
11
23
38
47
536
61728
764
8225
913
105832
111728
1221952
13196
14331776
15331776
1631
175832
181521
198000
203111696
2132768
2210077696
23331776
2446656000000
2531
263111696
272560000
289834496
29810000
30139314069504
3132768
32250047
33254803968
348503056
35254803968
368281
371444

[1,3,8,7,36,1728,64,225,13,5832,1728,21952,196,
 331776,331776,31,5832,1521,8000,3111696,32768,
 10077696,331776,46656000000,31,3111696,2560000,
 9834496,810000,139314069504,32768,250047,
 254803968,8503056,254803968,8281,1444]