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A157782 as a simple table

na(n)
01
11
212
34
4240
516
61344
764
83840
9256
1033792
111024
125591040
134096
1449152
1516384
1616711680
1765536
18104595456
19262144
20173015040
211048576
22289406976
234194304
2422900899840
2516777216
26201326592
2767108864
28116769423360
29268435456

[1,1,12,4,240,16,1344,64,3840,256,33792,1024,
 5591040,4096,49152,16384,16711680,65536,104595456,
 262144,173015040,1048576,289406976,4194304,
 22900899840,16777216,201326592,67108864,
 116769423360,268435456]