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A025600 as a simple table

na(n)
01
10
22
30
416
50
6264
70
86828
90
10218192
110
127555444
130
14269039512
150
169671837852
170
18348829877760
190
2012595130308612
210
22454944702478600
230
2416435098767896556
250
26593753325451468144
270
2821450960845508768532
290
30774978877336933136632
310

[1,0,2,0,16,0,264,0,6828,0,218192,0,7555444,0,
 269039512,0,9671837852,0,348829877760,0,
 12595130308612,0,454944702478600,0,
 16435098767896556,0,593753325451468144,0,
 21450960845508768532,0,774978877336933136632,0]