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A009575 formatted as a simple table:

n a(n)
0 0
1 0
2 2
3 -6
4 26
5 -140
6 894
7 -6594
8 55152
9 -515808
10 5334480
11 -60453360
12 745035840
13 -9921337920
14 141972324480
15 -2172695011200
16 35410730342400
17 -612356632473600
18 11198955424204800
19 -215960417122867200
20 4379675205233664000

[0,0,2,-6,26,-140,894,-6594,55152,-515808,5334480,
 -60453360,745035840,-9921337920,141972324480,
 -2172695011200,35410730342400,-612356632473600,
 11198955424204800,-215960417122867200,
 4379675205233664000]

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Last modified December 20 00:58 EST 2009. Contains 171054 sequences.


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