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A100247 formatted as a simple table:

n a(n)
0 1
1 1
2 1
3 0
4 1
5 2
6 2
7 5
8 0
9 1
10 3
11 5
12 14
13 14
14 42
15 0
16 1
17 4
18 9
19 28
20 42
21 132
22 132
23 429
24 0
25 1
26 5
27 14
28 48
29 90
30 297
31 429
32 1430
33 1430
34 4862
35 0
36 1
37 6
38 20
39 75
40 165
41 572
42 1001
43 3432
44 4862
45 16796
46 16796
47 58786
48 0
49 1
50 7
51 27
52 110
53 275
54 1001
55 2002
56 7072
57 11934
58 41990
59 58786
60 208012

[1,1,1,0,1,2,2,5,0,1,3,5,14,14,42,0,1,4,9,28,42,
 132,132,429,0,1,5,14,48,90,297,429,1430,1430,4862,
 0,1,6,20,75,165,572,1001,3432,4862,16796,16796,
 58786,0,1,7,27,110,275,1001,2002,7072,11934,41990,
 58786,208012]

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Last modified December 2 11:54 EST 2009. Contains 167921 sequences.


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