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A127697 as a simple table

n a(n)
0 1
1 1
2 0
3 0
4 0
5 0
6 2
7 32
8 368
9 3984
10 44304
11 521606
12 6564318
13 88422296
14 1272704694
15 19521035238
16 318120059458
17 5491779703870
18 100150978723568
19 1924351621839740
20 38864316540425434

[1,1,0,0,0,0,2,32,368,3984,44304,521606,6564318,
 88422296,1272704694,19521035238,318120059458,
 5491779703870,100150978723568,1924351621839740,
 38864316540425434]

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Last modified April 24 22:17 EDT 2024. Contains 371964 sequences. (Running on oeis4.)