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A054946 formatted as a simple table:

n a(n)
1 1
2 0
3 2
4 24
5 544
6 22320
7 1677488
8 236522496
9 64026088576
10 33832910196480
11 35262092417856512
12 72926863133112198144
13 300318571786159783496704
14 2467430973323656141183549440
15 40490606137578335674252914280448

[1,0,2,24,544,22320,1677488,236522496,64026088576,
 33832910196480,35262092417856512,
 72926863133112198144,300318571786159783496704,
 2467430973323656141183549440,
 40490606137578335674252914280448]

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Last modified December 18 21:37 EST 2009. Contains 171024 sequences.


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