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A001349 formatted as a simple table:

n a(n)
0 1
1 1
2 1
3 2
4 6
5 21
6 112
7 853
8 11117
9 261080
10 11716571
11 1006700565
12 164059830476
13 50335907869219
14 29003487462848061
15 31397381142761241960
16 63969560113225176176277
17 245871831682084026519528568
18 1787331725248899088890200576580
19 24636021429399867655322650759681644

[1,1,1,2,6,21,112,853,11117,261080,11716571,
 1006700565,164059830476,50335907869219,
 29003487462848061,31397381142761241960,
 63969560113225176176277,
 245871831682084026519528568,
 1787331725248899088890200576580,
 24636021429399867655322650759681644]

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Last modified December 4 15:11 EST 2009. Contains 170347 sequences.


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