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A020524 as a simple table

n a(n)
0 0
1 2
2 132
3 3080
4 57360
5 983072
6 16252992
7 264241280
8 4261413120
9 68451041792
10 1097364145152
11 17575006177280
12 281337537761280
13 4502500115750912
14 72048797944922112
15 1152851135862702080
16 18446181123756195840
17 295143401579725586432
18 4722330454072626511872

[0,2,132,3080,57360,983072,16252992,264241280,
 4261413120,68451041792,1097364145152,
 17575006177280,281337537761280,4502500115750912,
 72048797944922112,1152851135862702080,
 18446181123756195840,295143401579725586432,
 4722330454072626511872]

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Last modified April 24 05:26 EDT 2024. Contains 371918 sequences. (Running on oeis4.)