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A144646 formatted as a simple table:

n a(n)
0 0
1 0
2 0
3 0
4 3
5 25
6 145
7 756
8 3892
9 20644
10 114961
11 676533
12 4209513
13 27636258
14 190882952
15 1382925792
16 10480076627
17 82864738749
18 682076544033
19 5832741680788
20 51724157186816
21 474869814059620
22 4506715734253041
23 44152005846695761
24 445958869278028097

[0,0,0,0,3,25,145,756,3892,20644,114961,676533,
 4209513,27636258,190882952,1382925792,10480076627,
 82864738749,682076544033,5832741680788,
 51724157186816,474869814059620,4506715734253041,
 44152005846695761,445958869278028097]

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Last modified December 4 08:07 EST 2009. Contains 170310 sequences.


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