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A026952 formatted as a simple table:

n a(n)
1 1
2 4
3 24
4 90
5 541
6 2032
7 12275
8 46472
9 282003
10 1075404
11 6549906
12 25125114
13 153481299
14 591529776
15 3622111560
16 14013307170
17 85975792075
18 333669151420

[1,4,24,90,541,2032,12275,46472,282003,1075404,
 6549906,25125114,153481299,591529776,3622111560,
 14013307170,85975792075,333669151420]

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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