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A002456 as a simple table

na(n)
10
21
330
41260
575600
66237000
7681080400
895351256000
916672848192000
103563821301040000
11914714133933600000
12277707211062240960000
1398459829376612704000000
1440319300129722902288000000
1518888041368462498071840000000
1610037644841525784689606400000000

[0,1,30,1260,75600,6237000,681080400,95351256000,
 16672848192000,3563821301040000,
 914714133933600000,277707211062240960000,
 98459829376612704000000,
 40319300129722902288000000,
 18888041368462498071840000000,
 10037644841525784689606400000000]