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A246612 as a simple table

n a(n)
0 1
1 0
2 0
3 0
4 0
5 24
6 720
7 17640
8 430080
9 11022480
10 302835456
11 8976567600
12 287236730880
13 9901354268520
14 366504424366080
15 14515574208519384
16 612912858447052800
17 27497080096591516320
18 1306520704652165775360
19 65556843230110158804960
20 3464412427539012262035456

[1,0,0,0,0,24,720,17640,430080,11022480,302835456,
 8976567600,287236730880,9901354268520,
 366504424366080,14515574208519384,
 612912858447052800,27497080096591516320,
 1306520704652165775360,65556843230110158804960,
 3464412427539012262035456]

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Last modified January 23 03:15 EST 2022. Contains 350504 sequences. (Running on oeis4.)