login

A246610 as a simple table

na(n)
01
10
20
32
424
5300
64480
778750
81591296
936355256
10927244800
1126127386010
12806251494400
1327046291980708
14980094896062464
1538158333538165750
161588601646620835840
1770427042234715548400
183312574102411273437184
19164767312911755127462066
208641342923227371929600000

[1,0,0,2,24,300,4480,78750,1591296,36355256,
 927244800,26127386010,806251494400,27046291980708,
 980094896062464,38158333538165750,
 1588601646620835840,70427042234715548400,
 3312574102411273437184,164767312911755127462066,
 8641342923227371929600000]