login

A003692 as a simple table

na(n)
01
11
23
316
4120
51170
614070
7201600
83356640
963730800
101359666000
1132212857600
12839350512000
1323860289653200
14734964075846000
1524388126963200000
16867393811956672000
1732919980214689568000

[1,1,3,16,120,1170,14070,201600,3356640,63730800,
 1359666000,32212857600,839350512000,
 23860289653200,734964075846000,24388126963200000,
 867393811956672000,32919980214689568000]