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A052506 formatted as a simple table:

n a(n)
0 1
1 0
2 2
3 3
4 16
5 65
6 336
7 1897
8 11824
9 80145
10 586000
11 4588001
12 38239224
13 337611001
14 3144297352
15 30779387745
16 315689119456
17 3383159052833
18 37790736663456
19 439036039824193
20 5294386116882280

[1,0,2,3,16,65,336,1897,11824,80145,586000,
 4588001,38239224,337611001,3144297352,30779387745,
 315689119456,3383159052833,37790736663456,
 439036039824193,5294386116882280]

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.


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