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A000206 formatted as a simple table:

n a(n)
0 1
1 1
2 3
3 4
4 12
5 22
6 71
7 181
8 618
9 1957
10 6966
11 24367
12 89010
13 324766
14 1204815
15 4482400
16 16802826
17 63195016
18 238711285
19 904338163
20 3436380192
21 13089961012
22 49979421837
23 191221556269
24 733014218506
25 2814758323498
26 10825986453978

[1,1,3,4,12,22,71,181,618,1957,6966,24367,89010,
 324766,1204815,4482400,16802826,63195016,
 238711285,904338163,3436380192,13089961012,
 49979421837,191221556269,733014218506,
 2814758323498,10825986453978]

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.


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