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A374658 as a simple table

na(n)
05
120
2120
3840
48400
5117600
62469600
779027200
83951360000
9312157440000
1039331837440000
117945031162880000
122582135127936000000
131353038807038464000000
141144670830754540544000000
151564765025641456923648000000
163458130706667619801262080000000

[5,20,120,840,8400,117600,2469600,79027200,
 3951360000,312157440000,39331837440000,
 7945031162880000,2582135127936000000,
 1353038807038464000000,1144670830754540544000000,
 1564765025641456923648000000,
 3458130706667619801262080000000]