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A270251 as a simple table

n a(n)
1 0
2 12
3 66
4 468
5 3612
6 40020
7 601368
8 12473568
9 355574028
10 13968754800
11 756926837340
12 56646343727400
13 5861182843734528
14 839281074844449036
15 166460255072308752300
16 45762947464712474066844

[0,12,66,468,3612,40020,601368,12473568,355574028,
 13968754800,756926837340,56646343727400,
 5861182843734528,839281074844449036,
 166460255072308752300,45762947464712474066844]

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Last modified August 11 12:45 EDT 2024. Contains 375069 sequences. (Running on oeis4.)