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A056616 formatted as a simple table:

n a(n)
0 1
1 2
2 6
3 20
4 70
5 252
6 924
7 1144
8 12870
9 48620
10 184756
11 705432
12 2704156
13 10400600
14 40116600
15 155117520
16 200360130
17 466721244
18 9075135300
19 11781754600
20 137846528820
21 538257874440
22 140273264248
23 8233430727600
24 32247603683100

[1,2,6,20,70,252,924,1144,12870,48620,184756,
 705432,2704156,10400600,40116600,155117520,
 200360130,466721244,9075135300,11781754600,
 137846528820,538257874440,140273264248,
 8233430727600,32247603683100]

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Last modified December 9 14:43 EST 2009. Contains 170430 sequences.


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