login

A203419 as a simple table

na(n)
12
28
315
448
51152
619200
762370
8322560
917418240
10567705600
112481078600
1216907304960
131504935936000
148799558768000
1576435881984000
16819678899239200
1710176845001523200
182169274855587840000
19215013524533936128000

[2,8,15,48,1152,19200,62370,322560,17418240,
 567705600,2481078600,16907304960,1504935936000,
 8799558768000,76435881984000,819678899239200,
 10176845001523200,2169274855587840000,
 215013524533936128000]