A090446 - OEIS

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A090446 as a simple table

n	a(n)
-1	1
0	0
1	1
2	0
3	2
4	0
5	-3118
6	0
7	442703522
8	0
9	-13347247554466558
10	0
11	148707543361999816132646402
12	0
13	-915656396935528170667809129675491481598
14	0
15	4312599964271304706198945861064290667787580951294464002
16	0

[1,0,1,0,2,0,-3118,0,442703522,0, -13347247554466558,0,148707543361999816132646402, 0,-915656396935528170667809129675491481598,0, 43125999642713047061989458610642906677875809512944\ 64002,0]