A081128 - OEIS

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A081128 as a simple table

n	a(n)
0	0
1	1
2	24
3	432
4	6912
5	103680
6	1492992
7	20901888
8	286654464
9	3869835264
10	51597803520
11	681091006464
12	8916100448256
13	115909305827328
14	1497904875307008
15	19258776968232960
16	246512345193381888

[0,1,24,432,6912,103680,1492992,20901888, 286654464,3869835264,51597803520,681091006464, 8916100448256,115909305827328,1497904875307008, 19258776968232960,246512345193381888]