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A011781 formatted as a simple table:

n a(n)
0 1
1 3
2 27
3 405
4 8505
5 229635
6 7577955
7 295540245
8 13299311025
9 678264862275
10 38661097149675
11 2435649120429525
12 168059789309637225
13 12604484198222791875
14 1020963220056046141875
15 88823800144876014343125

[1,3,27,405,8505,229635,7577955,295540245,
 13299311025,678264862275,38661097149675,
 2435649120429525,168059789309637225,
 12604484198222791875,1020963220056046141875,
 88823800144876014343125]

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Last modified November 27 14:50 EST 2009. Contains 167570 sequences.


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