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A000207 formatted as a simple table:

n a(n)
1 1
2 1
3 1
4 3
5 4
6 12
7 27
8 82
9 228
10 733
11 2282
12 7528
13 24834
14 83898
15 285357
16 983244
17 3412420
18 11944614
19 42080170
20 149197152
21 531883768
22 1905930975
23 6861221666
24 24806004996
25 90036148954
26 327989004892
27 1198854697588
28 4395801203290

[1,1,1,3,4,12,27,82,228,733,2282,7528,24834,83898,
 285357,983244,3412420,11944614,42080170,149197152,
 531883768,1905930975,6861221666,24806004996,
 90036148954,327989004892,1198854697588,
 4395801203290]

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Last modified December 21 10:15 EST 2009. Contains 171081 sequences.


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