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A153398 as a simple table

n a(n)
0 1
1 1
2 5
3 33
4 245
5 1941
6 16023
7 136075
8 1179833
9 10392981
10 92701411
11 835271032
12 7589337123
13 69444928453
14 639280878401
15 5915683250220
16 54991636090761
17 513257729193329
18 4807619948647095
19 45177320023095160
20 425766248463523359

[1,1,5,33,245,1941,16023,136075,1179833,10392981,
 92701411,835271032,7589337123,69444928453,
 639280878401,5915683250220,54991636090761,
 513257729193329,4807619948647095,
 45177320023095160,425766248463523359]

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Last modified May 22 09:43 EDT 2013. Contains 225519 sequences.