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A101265 formatted as a simple table:

n a(n)
1 1
2 2
3 6
4 21
5 77
6 286
7 1066
8 3977
9 14841
10 55386
11 206702
12 771421
13 2878981
14 10744502
15 40099026
16 149651601
17 558507377
18 2084377906
19 7779004246
20 29031639077
21 108347552061
22 404358569166
23 1509086724602
24 5631988329241
25 21018866592361

[1,2,6,21,77,286,1066,3977,14841,55386,206702,
 771421,2878981,10744502,40099026,149651601,
 558507377,2084377906,7779004246,29031639077,
 108347552061,404358569166,1509086724602,
 5631988329241,21018866592361]

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Last modified December 6 22:55 EST 2009. Contains 170429 sequences.


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