A294320 - OEIS

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A294320 as a simple table

n	a(n)
0	1
1	120
2	43545600
3	271159356948480000
4	96447974277170077976494080000000
5	4927617876373416030299815278723491640115200000000000
6	76433315893700635598991132508610825923227961061372903345356800000000000000000

[1,120,43545600,271159356948480000, 96447974277170077976494080000000, 49276178763734160302998152787234916401152000000000\ 00, 76433315893700635598991132508610825923227961061372\ 903345356800000000000000000]