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A061552 formatted as a simple table:

n a(n)
0 1
1 1
2 2
3 6
4 23
5 103
6 513
7 2762
8 15793
9 94776
10 591950
11 3824112
12 25431452
13 173453058
14 1209639642
15 8604450011
16 62300851632
17 458374397312
18 3421888118907
19 25887131596018
20 198244731603623
21 1535346218316422
22 12015325816028313

[1,1,2,6,23,103,513,2762,15793,94776,591950,
 3824112,25431452,173453058,1209639642,8604450011,
 62300851632,458374397312,3421888118907,
 25887131596018,198244731603623,1535346218316422,
 12015325816028313]

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Last modified December 4 23:11 EST 2009. Contains 170347 sequences.


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