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A052528 as a simple table

n a(n)
0 1
1 1
2 4
3 8
4 22
5 52
6 132
7 324
8 808
9 2000
10 4968
11 12320
12 30576
13 75856
14 188224
15 467008
16 1158752
17 2875072
18 7133632
19 17699904
20 43916928
21 108966400
22 270366848
23 670832640
24 1664466176
25 4129863936
26 10246994944
27 25424785408
28 63083832832

[1,1,4,8,22,52,132,324,808,2000,4968,12320,30576,
 75856,188224,467008,1158752,2875072,7133632,
 17699904,43916928,108966400,270366848,670832640,
 1664466176,4129863936,10246994944,25424785408,
 63083832832]

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Last modified February 22 14:19 EST 2020. Contains 332136 sequences. (Running on oeis4.)