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A022899 as a simple table

n a(n)
1 0
2 0
3 0
4 1
5 0
6 0
7 0
8 4
9 0
10 9
11 0
12 14
13 0
14 75
15 0
16 155
17 0
18 724
19 0
20 2376
21 0
22 6900
23 0
24 26937
25 0
26 92823
27 0
28 326942
29 0
30 1156399
31 0
32 3960856
33 0
34 14320442
35 0
36 53136802
37 0
38 190397836
39 0
40 706309816
41 0
42 2596474887
43 0
44 9540434672
45 0
46 35480735090
47 0
48 132003300757
49 0

[0,0,0,1,0,0,0,4,0,9,0,14,0,75,0,155,0,724,0,2376,
 0,6900,0,26937,0,92823,0,326942,0,1156399,0,
 3960856,0,14320442,0,53136802,0,190397836,0,
 706309816,0,2596474887,0,9540434672,0,35480735090,
 0,132003300757,0]

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Last modified September 2 10:39 EDT 2015. Contains 261279 sequences.