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A214447 as a simple table

n a(n)
0 1
1 -2
2 0
3 40
4 0
5 -4032
6 0
7 933504
8 0
9 -385848320
10 0
11 249576198144
12 0
13 -232643283353600
14 0
15 295306112919306240
16 0
17 -489743069731226910720
18 0
19 1028154317960939805081600
20 0
21 -2665182817368374114506506240
22 0
23 8360422228704533182913131315200

[1,-2,0,40,0,-4032,0,933504,0,-385848320,0,
 249576198144,0,-232643283353600,0,
 295306112919306240,0,-489743069731226910720,0,
 1028154317960939805081600,0,
 -2665182817368374114506506240,0,
 8360422228704533182913131315200]

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Last modified April 23 14:49 EDT 2024. Contains 371914 sequences. (Running on oeis4.)