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A051190 as a simple table

na(n)
11
21
31
42
51
612
71
816
99
1080
111
123456
131
14448
152025
162048
171
18186624
191
201024000
2135721
2211264
231
24573308928
25625
2653248
2759049
28179830784
291
301007769600000
311
3267108864
337144929
341114112
3537515625
36160489808068608
371
384980736
3989813529

[1,1,1,2,1,12,1,16,9,80,1,3456,1,448,2025,2048,1,
 186624,1,1024000,35721,11264,1,573308928,625,
 53248,59049,179830784,1,1007769600000,1,67108864,
 7144929,1114112,37515625,160489808068608,1,
 4980736,89813529]