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A129551 formatted as a simple table:

n a(n)
1 0
2 0
3 0
4 0
5 0
6 0
7 4
8 44
9 280
10 1304
11 12452
12 105012
13 977664
14 9239816
15 90776620
16 897446092

[0,0,0,0,0,0,4,44,280,1304,12452,105012,977664,
 9239816,90776620,897446092]

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Last modified December 5 23:38 EST 2009. Contains 170428 sequences.


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