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A291115 as a simple table

n a(n)
0 0
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 0
9 40320
10 4032000
11 266112000
12 15008716800
13 794060467200
14 41179634496000
15 2142915046272000
16 113401428940800000
17 6150985123214131200
18 343578020565722342400
19 19818131438503157760000
20 1182304993642509574656000
21 73005714001076187082752000

[0,0,0,0,0,0,0,0,0,40320,4032000,266112000,
 15008716800,794060467200,41179634496000,
 2142915046272000,113401428940800000,
 6150985123214131200,343578020565722342400,
 19818131438503157760000,1182304993642509574656000,
 73005714001076187082752000]

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Last modified April 25 06:49 EDT 2024. Contains 371964 sequences. (Running on oeis4.)