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A000200 as a simple table

n a(n)
0 0
1 0
2 1
3 0
4 1
5 1
6 3
7 3
8 9
9 15
10 38
11 73
12 174
13 380
14 915
15 2124
16 5134
17 12281
18 30010
19 73401
20 181835
21 452165
22 1133252
23 2851710
24 7215262
25 18326528
26 46750268
27 119687146
28 307528889
29 792716193
30 2049703887
31 5314775856
32 13817638615
33 36012395538

[0,0,1,0,1,1,3,3,9,15,38,73,174,380,915,2124,5134,
 12281,30010,73401,181835,452165,1133252,2851710,
 7215262,18326528,46750268,119687146,307528889,
 792716193,2049703887,5314775856,13817638615,
 36012395538]

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Last modified May 24 09:14 EDT 2013. Contains 225617 sequences.