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A006342 formatted as a simple table:

n a(n)
0 1
1 1
2 4
3 10
4 31
5 91
6 274
7 820
8 2461
9 7381
10 22144
11 66430
12 199291
13 597871
14 1793614
15 5380840
16 16142521
17 48427561
18 145282684
19 435848050
20 1307544151
21 3922632451
22 11767897354
23 35303692060
24 105911076181
25 317733228541

[1,1,4,10,31,91,274,820,2461,7381,22144,66430,
 199291,597871,1793614,5380840,16142521,48427561,
 145282684,435848050,1307544151,3922632451,
 11767897354,35303692060,105911076181,
 317733228541]

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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.


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