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A009357 as a simple table

n a(n)
0 0
1 1
2 -1
3 0
4 2
5 -20
6 104
7 -560
8 2512
9 -7920
10 -32896
11 1034880
12 -14979328
13 172569280
14 -1684304896
15 12339608320
16 -15173408768
17 -1902800305920
18 53242752303104
19 -1037015219466240
20 16518488951816192
21 -208832669083243520

[0,1,-1,0,2,-20,104,-560,2512,-7920,-32896,
 1034880,-14979328,172569280,-1684304896,
 12339608320,-15173408768,-1902800305920,
 53242752303104,-1037015219466240,
 16518488951816192,-208832669083243520]

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Last modified April 25 07:41 EDT 2024. Contains 371964 sequences. (Running on oeis4.)