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A271246 as a simple table

na(n)
10
20
30
40
50
60
70
80
927
100
110
120
1364
143969
150
160
170
1876
1919200
20900963
210
220
230
2477
2533672
269523200
27401227533
280
290
300
3177
3238571
3328240419
3410151116800
35378139318893
360
370
380
3977
4039210
4143105569
4256147799704
4324976569139200
44781827640754454
450
460
470
4877

[0,0,0,0,0,0,0,0,27,0,0,0,64,3969,0,0,0,76,19200,
 900963,0,0,0,77,33672,9523200,401227533,0,0,0,77,
 38571,28240419,10151116800,378139318893,0,0,0,77,
 39210,43105569,56147799704,24976569139200,
 781827640754454,0,0,0,77]