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A270855 as a simple table

n a(n)
1 0
2 0
3 28440
4 27582438
5 5805948474
6 571228600932
7 29999932959600
8 1131964246928502
9 27738553460278170
10 526704152938743948
11 7209576736148583840
12 80085435443327098104
13 700902167873486650002

[0,0,28440,27582438,5805948474,571228600932,
 29999932959600,1131964246928502,27738553460278170,
 526704152938743948,7209576736148583840,
 80085435443327098104,700902167873486650002]

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Last modified January 27 07:42 EST 2022. Contains 350605 sequences. (Running on oeis4.)