login

A268218 as a simple table

na(n)
00
10
20
30
44
530
6200
71435
811536
9103908
101039200
1111431365
12137176600
131783296086
1424966145568
15374492183975
165991874944160
17101861874051400
181833513732926016
1934836760925595273
20696735218511906600
2114631439588750039930
22321891670952500880000
237403508431907520241771

[0,0,0,0,4,30,200,1435,11536,103908,1039200,
 11431365,137176600,1783296086,24966145568,
 374492183975,5991874944160,101861874051400,
 1833513732926016,34836760925595273,
 696735218511906600,14631439588750039930,
 321891670952500880000,7403508431907520241771]