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A006479 as a simple table

n a(n)
0 0
1 0
2 0
3 1
4 5
5 18
6 52
7 134
8 318
9 713
10 1531
11 3180
12 6432
13 12732
14 24756
15 47417
16 89665
17 167694
18 310628
19 570562
20 1040226
21 1883953
22 3391799
23 6073848
24 10824096
25 19204536
26 33936456

[0,0,0,1,5,18,52,134,318,713,1531,3180,6432,12732,
 24756,47417,89665,167694,310628,570562,1040226,
 1883953,3391799,6073848,10824096,19204536,
 33936456]

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Last modified May 23 21:49 EDT 2013. Contains 225612 sequences.