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A002110 formatted as a simple table:

n a(n)
0 1
1 2
2 6
3 30
4 210
5 2310
6 30030
7 510510
8 9699690
9 223092870
10 6469693230
11 200560490130
12 7420738134810
13 304250263527210
14 13082761331670030
15 614889782588491410
16 32589158477190044730
17 1922760350154212639070

[1,2,6,30,210,2310,30030,510510,9699690,223092870,
 6469693230,200560490130,7420738134810,
 304250263527210,13082761331670030,
 614889782588491410,32589158477190044730,
 1922760350154212639070]

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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