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A177605 as a simple table

n a(n)
0 1
1 1
2 20
3 1680
4 369600
5 166923119
6 134612399509
7 176468898415460
8 351456009607660440
9 1010384984894493146400
10 4028532188816344883922611
11 21572165225621811583520157531
12 151100918612288209338643024889160
13 1354217120536797195675961944817053840 

[1,1,20,1680,369600,166923119,134612399509,
 176468898415460,351456009607660440,
 1010384984894493146400,4028532188816344883922611,
 21572165225621811583520157531,
 151100918612288209338643024889160,
 1354217120536797195675961944817053840]

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Last modified April 16 07:08 EDT 2024. Contains 371698 sequences. (Running on oeis4.)