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A014794 as a simple table

na(n)
00
164
21600
39216
430976
578400
6166464
7313600
8541696
9876096
101345600
111982464
122822400
133904576
145271616
156969600
169048064
1711560000
1814561856
1918113536
2022278400
2127123264
2232718400
2339137536
2446457856
2554760000

[0,64,1600,9216,30976,78400,166464,313600,541696,
 876096,1345600,1982464,2822400,3904576,5271616,
 6969600,9048064,11560000,14561856,18113536,
 22278400,27123264,32718400,39137536,46457856,
 54760000]