login

A170740 as a simple table

na(n)
01
121
2420
38400
4168000
53360000
667200000
71344000000
826880000000
9537600000000
1010752000000000
11215040000000000
124300800000000000
1386016000000000000
141720320000000000000
1534406400000000000000
16688128000000000000000
1713762560000000000000000
18275251200000000000000000

[1,21,420,8400,168000,3360000,67200000,1344000000,
 26880000000,537600000000,10752000000000,
 215040000000000,4300800000000000,
 86016000000000000,1720320000000000000,
 34406400000000000000,688128000000000000000,
 13762560000000000000000,275251200000000000000000]