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A000063 formatted as a simple table:

n a(n)
5 1
6 1
7 2
8 4
9 5
10 14
11 14
12 39
13 42
14 132
15 132
16 424
17 429
18 1428
19 1430
20 4848
21 4862
22 16796
23 16796
24 58739
25 58786
26 208012
27 208012
28 742768
29 742900
30 2674426
31 2674440
32 9694416

[1,1,2,4,5,14,14,39,42,132,132,424,429,1428,1430,
 4848,4862,16796,16796,58739,58786,208012,208012,
 742768,742900,2674426,2674440,9694416]

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.


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