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A180491 as a simple table

na(n)
11
21
31
40
52
60
76
80
90
100
11720
120
132160
140
150
160
172419200
180
1965318400
200
210
220
23754427520000
240
250
260
270
280
2932953394073600000
300
31311409573995520000
320
330
340
350
360
3737269497815783833600000
380
390
400
417890485108998805913600000000
420

[1,1,1,0,2,0,6,0,0,0,720,0,2160,0,0,0,2419200,0,
 65318400,0,0,0,754427520000,0,0,0,0,0,
 32953394073600000,0,311409573995520000,0,0,0,0,0,
 37269497815783833600000,0,0,0,
 7890485108998805913600000000,0]