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A027562 formatted as a simple table:

n a(n)
0 0
1 0
2 0
3 0
4 0
5 0
6 2
7 6
8 24
9 62
10 178
11 426
12 1070
13 2444
14 5720
15 12662
16 28392
17 61464
18 133980
19 285304
20 609750
21 1282278
22 2701396
23 5626046
24 11725614
25 24234418
26 50093914
27 102905764
28 211350724
29 432051438
30 882876204
31 1797686520

[0,0,0,0,0,0,2,6,24,62,178,426,1070,2444,5720,
 12662,28392,61464,133980,285304,609750,1282278,
 2701396,5626046,11725614,24234418,50093914,
 102905764,211350724,432051438,882876204,
 1797686520]

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


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