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A020103 formatted as a simple table:

n a(n)
0 1
1 1
2 1
3 1
4 2
5 7
6 33
7 200
8 1436
9 11742
10 107810
11 1097701
12 12274283
13 149523080
14 1970986053
15 27952165839
16 424364699555
17 6866992410975
18 117987415061287
19 2145225728387030
20 41149329880878478
21 830468293959547465

[1,1,1,1,2,7,33,200,1436,11742,107810,1097701,
 12274283,149523080,1970986053,27952165839,
 424364699555,6866992410975,117987415061287,
 2145225728387030,41149329880878478,
 830468293959547465]

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Last modified December 11 12:57 EST 2009. Contains 170656 sequences.


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