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A228574 as a simple table

na(n)
10
21
30
41
50
616
70
81
90
101
110
126561
130
140
150
160
170
180
190
206561
210
22456976
230
2465536
250
2684934656
270
2812745506816
290
30335563778560000
310
321105346784523536
330
34441194850625
350
36986262467993856
370
3880385880645971214336
390
406387622009837971841

[0,1,0,1,0,16,0,1,0,1,0,6561,0,0,0,0,0,0,0,6561,0,
 456976,0,65536,0,84934656,0,12745506816,0,
 335563778560000,0,1105346784523536,0,441194850625,
 0,986262467993856,0,80385880645971214336,0,
 6387622009837971841]