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A039647 formatted as a simple table:

n a(n)
1 1
2 3
3 8
4 42
5 264
6 2160
7 20880
8 236880
9 3064320
10 44634240
11 722131200
12 12853209600
13 249559833600
14 5249378534400
15 118911189196800
16 2886037330176000
17 74715282690048000
18 2055161959538688000
19 59855791774851072000

[1,3,8,42,264,2160,20880,236880,3064320,44634240,
 722131200,12853209600,249559833600,5249378534400,
 118911189196800,2886037330176000,
 74715282690048000,2055161959538688000,
 59855791774851072000]

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.


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