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A252839 as a simple table

n a(n)
0 0
1 0
2 0
3 28565107560
4 272454472598400
5 142575583958069520
6 18434332194257819520
7 1017379423994278214520
8 31340171098354199988480
9 628988614673638882511520
10 9076042310340825810167040
11 100702084869046006909196040
12 901495065442530655732775040 

[0,0,0,28565107560,272454472598400,
 142575583958069520,18434332194257819520,
 1017379423994278214520,31340171098354199988480,
 628988614673638882511520,
 9076042310340825810167040,
 100702084869046006909196040,
 901495065442530655732775040]

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Last modified September 16 21:44 EDT 2024. Contains 375977 sequences. (Running on oeis4.)