login

A075377 as a simple table

na(n)
11
21
31
41
56
61
71
860
91
101
11840
125040
131
1410080
151
1615120
171
181
19332640
203326400
2119958400
221
231
248648640
251
261816214400
271
28259459200
2936324288000
30217945728000
311307674368000
321
331
348821612800
351482030950400
3688921857024000
371
381

[1,1,1,1,6,1,1,60,1,1,840,5040,1,10080,1,15120,1,
 1,332640,3326400,19958400,1,1,8648640,1,
 1816214400,1,259459200,36324288000,217945728000,
 1307674368000,1,1,8821612800,1482030950400,
 88921857024000,1,1]