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A185070 as a simple table

na(n)
01
11
24
325
42
5224
632
72625
8500
938056
108560
1140
12657433
13164150
141960
1513178880
163526656
1771680
18300585601
1984389928
202442720
212240
227683776000
232232672000
2483328000
25224000
26217534555161
2764830707370
282931500880
2914907200

[1,1,4,25,2,224,32,2625,500,38056,8560,40,657433,
 164150,1960,13178880,3526656,71680,300585601,
 84389928,2442720,2240,7683776000,2232672000,
 83328000,224000,217534555161,64830707370,
 2931500880,14907200]