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A073877 as a simple table

n a(n)
1 1
2 2
3 15
4 52
5 5
6 4140
7 203
8 0
9 82864869804
10 678570
11 10293358946226376485095653
12 6775685320645824322581483068371419745979053216268760300
13 4638590332229999353
14 51724158235372
15 281600203019560266563340426570
16 0

[1,2,15,52,5,4140,203,0,82864869804,678570,
 10293358946226376485095653,
 67756853206458243225814830683714197459790532162687\
 60300,4638590332229999353,51724158235372,
 281600203019560266563340426570,0]

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Last modified January 31 17:49 EST 2023. Contains 359980 sequences. (Running on oeis4.)