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A326857 as a simple table

na(n)
01
10
21
30
40
524
60
7504
85040
90
10226800
113628800
120
13438721920
146227020800
1516345929600
161127656857600
1720922789888000
1858203397324800
196697914906009600
20121645100408832000
21655224745383936000
2251359276952023040000
231124000727777607680000

[1,0,1,0,0,24,0,504,5040,0,226800,3628800,0,
 438721920,6227020800,16345929600,1127656857600,
 20922789888000,58203397324800,6697914906009600,
 121645100408832000,655224745383936000,
 51359276952023040000,1124000727777607680000]