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A006939 as a simple table

na(n)
01
12
212
3360
475600
5174636000
65244319080000
72677277333530800000
825968760179275365452000000
95793445238736255798985527240000000
1037481813439427687898244906452608585200000000
117517370874372838151564668004911177464757864076000000000
1255784440720968513813368002533861454979548176771615744085560000000000

[1,2,12,360,75600,174636000,5244319080000,
 2677277333530800000,25968760179275365452000000,
 5793445238736255798985527240000000,
 37481813439427687898244906452608585200000000,
 75173708743728381515646680049111774647578640760000\
 00000,
 55784440720968513813368002533861454979548176771615\
 744085560000000000]