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A143662 formatted as a simple table:

n a(n)
1 0
2 0
3 0
4 0
5 0
6 0
7 1
8 3
9 8
10 20
11 48
12 112
13 256
14 575
15 1275
16 2798
17 6088
18 13152
19 28240
20 60320
21 128257
22 271623
23 573216
24 1205880
25 2529680
26 5293264
27 11050496
28 23021311
29 47868151

[0,0,0,0,0,0,1,3,8,20,48,112,256,575,1275,2798,
 6088,13152,28240,60320,128257,271623,573216,
 1205880,2529680,5293264,11050496,23021311,
 47868151]

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Last modified December 5 23:38 EST 2009. Contains 170428 sequences.


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