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A075501 as a simple table

na(n)
11
26
31
436
518
61
7216
8252
936
101
111296
123240
13900
1460
151
167776
1740176
1819440
192340
2090
211
2246656
23489888
24390096
2575600
265040
27126
281
29279936
305925312
317511616
322204496
33226800
349576
35168
361
371679616
3871383680

[1,6,1,36,18,1,216,252,36,1,1296,3240,900,60,1,
 7776,40176,19440,2340,90,1,46656,489888,390096,
 75600,5040,126,1,279936,5925312,7511616,2204496,
 226800,9576,168,1,1679616,71383680]